What Is Zip Code 4?

A ZIP+4 Code uses the basic five-digit code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a city block, a group of apartments, an individual high-volume receiver of mail, a post office box, or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery.
Your ZIP+4 is a basic five-digit code with four digits added as an extra identifier. It helps to identify a geographic segment within the five-digit delivery area, such as a city block, a group of apartments, an individual high-volume receiver of mail, or a post office box.

What does ZIP+4 stand for?

In 1983, the U.S. Postal Service introduced an expanded ZIP Code system that it called ZIP+4, often called ‘plus-four codes’, ‘add-on codes’, or ‘add-ons’.

How do I determine a ZIP +4 code?

To determine a ZIP +4 Code you will need to know an address. The last four digits are not specific to a city but to a street address or Post Office Box. This is what an address looks like with the ZIP +4 Code:

What is the last 4 digit of ZIP code?

People call and ask for the ‘Full ZIP Code’, the ‘Last 4 Digits’ of their ZIP Code, the ‘9 Digit ZIP Code’, the ‘numbers after a ZIP Code’, the ‘4 digit extension’ and so on. Even though they all mean the same thing, The U.S. Postal Service refers to these numbers as the ‘ZIP +4 Code’.

What does’plus 4 code’mean?

What does ‘Plus 4 Code’ mean? Zip+4 Codes are used to identify a geographic segment within the 5-digit ZIP code delivery area, such as a city block or a group of apartments or an individual high-volume receiver of mail, or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery.

What is the meaning of zip 4?

ZIP+4 Codes (ZIP Plus 4 Codes) are 4-digit codes added to 5-digit USPS ZIP Codes. The first five digits indicate the national area and destination post office / delivery area. The last 4 digits represent specific routes within delivery areas. 9-digit ZIP+4 Codes aid in routing and delivery efficiency.

What states zip codes start with 4?

What is a ZIP Code and how do they work?

ZIP Codes Beginning With States
3 Alabama, Florida, Georgia, Mississippi, Tennessee, Army Post Office Americas, Fleet Post Office Americas
4 Indiana, Kentucky, Michigan, Ohio
5 Iowa, Minnesota, Montana, North Dakota, South Dakota, Wisconsin
6 Illinois, Kansas, Missouri, Nebraska

How do I find a zip code?

Look Up a ZIP Code™

  1. By Address. Enter a corporate or residential street address, city, and state to see a specific ZIP Code™. Find by Address.
  2. By City and State. Enter city and state to see all the ZIP Codes™ for that city. Find by City & State.
  3. Cities by ZIP Code™ Enter a ZIP Code™ to see the cities it covers.

How many ZIP 4 codes are there in the US?

There are 41,683 ZIP Codes in the country.

What is a ZIP 4 code and how is it different from a 5 digit ZIP code?

What is a zip+4 code, and how is it different from a 5 digit zip code? A more detailed mailing code consisting of the original 5 zip code digit followed by a hyphen and four additional digits. These digits identify a specific geographic segment in delivery area.

What’s the lowest zip code?

The lowest ZIP Code number is 00501, unique for the Internal Revenue Service in Holtsville, NY.

Do any US zip codes start with 0?

The first digit of the ZIP code is used as follows: 0 = Connecticut (CT), Massachusetts (MA), Maine (ME), New Hampshire (NH), New Jersey (NJ), Puerto Rico (PR), Rhode Island (RI), Vermont (VT), Virgin Islands (VI), APO Europe (AE), FPO Europe (AE)

Do all Michigan zip codes start with 4?

All Michigan ZIP codes begin with either 48- or 49-. The three digit prefixes are each assigned to a sectional center facility (SCF), the processing and distribution center for the USPS. There are eleven SCFs in Michigan.

What is a zip code in Canada?

Like British, Irish and Dutch postcodes, Canada’s postal codes are alphanumeric. They are in the format A1A 1A1, where A is a letter and 1 is a digit, with a space separating the third and fourth characters.

What is the zip code of USA Texas?

Zip Codes in Texas 2022

Zip Code City County
75216 Dallas Dallas County
76051 Grapevine Tarrant County
79907 El Paso El Paso County
77070 Houston Harris County

What is my zip code Saudi Arabia?

Zip Codes of all cities of Saudi Arabia

  1. Riyadh Postal Code: 12271.
  2. Jeddah Zip Code: 22233.
  3. Makkah Postal Code: 24231.
  4. Dammam Zip Code: 34223.
  5. Jubail Postal Code: 35713.
  6. Khobar Zip Code: 34714.
  7. Yanbu Postal Code: 46477.
  8. Taif Zip Code: 26511.

What does the Z stand for in ZIP code?

What does ZIP mean? ZIP is an acronym for Zone Improvement Plan. However, the USPS intentionally chose the acronym to indicate that mail travels more quickly when senders mark the postal code on their packages and envelopes.

What is the first ZIP code in the US?

This first-ever ZIP Code was 00601, designating a decent chunk of Puerto Rico as the first Zone Improvement Plan (ZIP) in the United States.

Which city has the most zip codes?

The Most Populated Zip Codes in America

Rank ZIP code Metro area
1 77449 Houston, Texas
2 11368 New York, New York
3 60629 Chicago, Illinois
4 79936 El Paso, TX, Texas

What are the 4 digits after my ZIP code?

– The 9-digit ZIP Code consists of two sections. – The first five digits indicate the destination post office or delivery area. – The last 4 digits represent specific delivery routes within delivery areas. – ZIP plus 4 codes assist the USPS in effectively sorting and distributing mail.

How do I find the 4 digit ZIP code extension?

  • State Other AL (Alabama) AK (Alaska) AZ (Arizona) AR (Arkansas) CA (California) CO (Colorado) CT (Connecticut) DE (Delaware) FL (Florida) GA (Georgia) HI (Hawaii) ID (Idaho) IL (Illinois) IN (Indiana)
  • City Index None A B C D E F G H I J K L M N O P Q R S T U V Y
  • City Name None
  • Street Index None
  • Street None
  • What are the last 4 numbers after the ZIP code?

    ZIP+4 Codes (or ZIP Plus 4 Codes) are the final 4 digits of a full nine-digit ZIP Code. The 9-digit ZIP Code consists of two sections. The first five digits indicate the destination post office or delivery area. The last 4 digits represent specific delivery routes within delivery areas.

    How to find my unique 4 digit ZIP code extension?

    Visit the USPS website and click on the link titled ‘Look Up a ZIP Code.’ Enter the mailing address in the appropriate boxes and click ‘Find.’ For example, enter 1600 Pennsylvania Ave NW, Washington, DC if you are looking up the ZIP Code+4 Extension for the White House.

    What is a ZIP +4 Code?

    Is it possible to tell what the last four numbers in a nine-digit ZIP Code are?People call and ask for the ″Full ZIP Code,″ the ″Last 4 Digits″ of their ZIP Code, the ″9 Digit ZIP Code,″ the ″numbers following a ZIP Code,″ the ″4 digit extension,″ and a variety of other information about their ZIP Code.However, despite the fact that they all correspond to the same item, the United States Postal Service refers to these digits as the ″ZIP +4 Code.″ You will need to know the address in order to obtain the ZIP +4 Code.The last four numbers do not correspond to a specific city, but rather to a street address or a Post Office Box.The following is an example of how an address with the ZIP +4 Code looks: These five numbers indicate the region of the nation where the mail is being delivered, as well as the delivery office where the mail is being delivered.As you travel westward, ZIP Codes steadily become more complex, beginning with a zero (0) in the northeast.

    ZIP Codes in the far western United States begin with the number nine (9).In the sixth and seventh digits, there is a delivery sector, which can be several blocks, a group of streets, a group of Post Office boxes, several office buildings, a single high-rise office building, a large apartment building, or a small geographic area.In the sixth and seventh digits, there is a delivery sector.

    One floor of an office building, one side of a street, certain departments within an office, or individual Post Office boxes are represented by the last two digits of the delivery segment number.It’s a good idea to be familiar with your ZIP +4 Code.It is becoming increasingly common for corporations to require it on paperwork and forms.

    The United States Postal Service (USPS) does not require that parcels or mails have the +4 code.Using the right ZIP+4 code, on the other hand, decreases the number of times your mail is handled, which reduces the likelihood of a misdelivery or an error.You may find your ZIP +4 Code by clicking here.

    1. We are a licensed provider of the ZIP Code Data from the United States Postal Service.
    2. If you want a ZIP +4 database, please see our ZIP+4 Database for the United States page.
    3. Every street and address range in the United States, as well as the associated ZIP +4 Code, is contained inside our databases.

    Home

    The data on this website contains more than 45,000,000 ZIP Code 5 Plus 4 in the United States, as well as information on the ZIP Code 5 Plus 4, the range, the record type, the carrier route ID, the street address, the city name, the county FIPS, the state abbreviation, and more. There is also an online map available.

    State List

    45 million 9-digital numbers ZIP codes 5 and 4 are subdivided into subdomain webpages for each of the 50 states and one district, where you may get further information such as zip code 5, zip code 5+4, city and county information, and so on. The following is a list of the states of the United States. Select a state from the drop-down menu to see detailed ZIP code information.

    City Name

    Please look for ZIP Codes by city name using the following formula:

    County FIPS

    Please review the following ZIP Codes by County FIPS:

    ZIP Code 5

    Please check the following ZIP Codes by ZIP Code 5:

    Envelope Example

    This is an example of a United States postal envelope.The sender’s information should be entered at the top left, and the recipient’s information should be entered at the bottom right.Sender’s and recipient’s full names, street addresses, city and state, and zip code are all required pieces of information.The information on the recipient’s address has been provided for your convenience.In most cases, if you are unsure of the entire 9-digit zip code, you should just put in the 5-digit zip code to prevent losing your product in transit.

    Please see the following government paper for further explanation: USA.pdf (English)

    Population

    With a decrease of –6,082 people between 2010 and 2019, the population of the state of American Samoa increased from 55,519 in 2010.American Samoa is now the 56th most populous state in the United States, with a population of 0.02 percent of the overall population of the United States of America.The population of the state of Guam was 159,358 in 2010 and has increased to 159,358 in 2019, representing a growth of +9,127 from 2010.Guam is now the 53rd most populous state in the United States, and it has a population of 0.05 percent of the overall population of the United States.The population of the state of Northern Mariana Islands was 53,883 in 2010 and 53,883 in 2019, representing a decrease of –2,450 from the previous year.As of today, the Northern Mariana Islands is the 55th most populous state in the United States, with a population that amounts for 0.02 percent of the entire population of the country.

    The population of the state of Puerto Rico was 3,725,789 in 2010 and increased to 3,725,789 in 2019, representing a decrease of –532,095 from the previous year.In terms of population size, Puerto Rico is the 31st most populous state in the United States, accounting for 0.96 percent of the overall population of the country.According to the United States Census Bureau, the population of the Virgin Islands was 106,405 in 2010 and 106,405 in 2019, representing a decrease of –170 from 2010.

    As of today, the Virgin Islands are the 54th most populous state in the United States, with a population that accounts for 0.03 percent of the entire population of the United States.

    Area 2019 Census Data 2010 Census Data Increase Increase(%) Rank Proportion of total population(%)
    American Samoa 49,437 55,519 –6,082 –10.95% 56th 0.02%
    Guam 168,485 159,358 +9,127 5.73% 53th 0.05%
    Northern Mariana Islands 51,433 53,883 –2,450 –4.55% 55th 0.02%
    Puerto Rico 3,193,694 3,725,789 –532,095 –14.3% 31th 0.96%
    Virgin Islands 106,235 106,405 –170 –0.16% 54th 0.03%

    ZIP+4™ Codes Lookup by Address

    ZIP+4 Numbers (ZIP Plus 4 Codes) are four-digit codes that are appended to five-digit United States Postal Service ZIP Codes.The first five digits of the postal code identify the country and the post office / delivery region where the package is to be delivered.Individual routes within delivery zones are represented by the final four digits.The use of 9-digit ZIP+4 Codes improves the efficiency of routing and delivery.

    9-digit Full ZIP Code Lookup by Address

    We make it simple to complete a full ZIP+4 Code lookup by address using the United States Postal Service. To discover your ZIP+4 Code, select one of the options listed below.

    Enter an address to lookup the specific ZIP+4 Code. Lookup several ZIP+4 Codes at once with the Bulk Tool. Lookup ZIP+4 Codes programmatically using our APIs.
    ZIP+4 Lookup Bulk ZIP+4 Lookup ZIP+4 API Lookup
    • When you enter your address, we make it simple to complete a USPS full ZIP+4 Code lookup. For help locating your ZIP+4 Code, select an option from the drop-down menus below.

    How to Find My ZIP+4 Code by Address

    If you watch this video, you will learn how to quickly and simply figure out your own ZIP+4 last four numbers. It will take you less than one minute.

    How Full ZIP Codes Are Used

    Knowing what the last four digits of a ZIP Code are all about necessitates a thorough understanding of what ZIP Codes are in general terms.The Zone Improvement Plan was developed by the United States Postal Service in order to make it simpler to send mail and parcels around the country.Due to the way mail was dispersed, it helped split the country into distinct ″zones,″ which aided in speeding up the sorting and delivery process.During the same time period that the Postal Service Department announced the Zone Improvement Plan on July 1, 1963, they also presented the world to Mr.ZIP ″Zippy,″ a fictional character created by the Postal Service.Zippy is the official ZIP Code mascot, and he can be found on our ZIP Codes 101 website as well.

    They also produced the ZIP Code jingle, which goes as follows: The audio element cannot be played because your browser does not support it.Since 1963, as the population of the United States has grown and dispersed, it has become necessary to extend the system in order to accommodate everyone and their canine companion.That’s where the ″plus 4″ portion of the equation comes in.

    However, we’re getting ahead of ourselves, so let’s start with the fundamentals.

    USPS Five-Digit ZIP Codes

    1. These are the codes with which you are already familiar.
    2. They have the following appearance……and are most usually used to denote a destination post office.
    3. The reason behind this is as follows: If you’re shipping a letter from Boston to Seattle, the Massachusetts postal carrier isn’t really concerned with the street address of the recipient’s residence.
    • What you may label ″beyond his jurisdiction″ is the situation.
    • He only has to know which postal carrier to use in order for the other carrier to deliver the package to the correct address.
    • On any given day, a postal worker can only cover a certain amount of ground.
    • And because the United States Postal Service has a policy of delivering in all weather conditions, including rain, sleet, and snow, there is no way to provide the service of delivering in stages (some today, some tomorrow).

    In other words, each one post office can only service the area that it can reach in a single day.That is reflected in the ZIP Codes.The majority of the time, a ZIP Code is associated with a post office; that is, every one of the latter has a corresponding one of the former.ZIP Codes may be thought of as a sort of postal address for a certain post office location.

    Some agents cover more than one ZIP code, but the majority of them operate on a one-on-one basis.Note that ZIP Codes are not ″boundaries,″ which is extremely essential to understand.They’re a collection of delivery routes that have been compiled.They do not adhere to physical or administrative boundaries, and they are capable of crossing city, county, and even state boundaries.

    1. They travel in the same direction as the delivery vehicles.
    2. Some ZIP Codes are considered to be outliers.
    3. One type of ZIP Code is designated as ″military,″ and it includes anything from military sites (local and international) to battleships at sea.

    Then there are ZIP Codes that are ″unique.″ Because of the large volume of mail that businesses and organizations send and receive, they may be assigned their own ZIP Codes.These organizations regularly take advantage of bulk mailing reductions because they typically have a mail department that (1) presorts mail before delivering it to the USPS and (2) distributes mail internally so that the USPS is not required to do so.″Military″ and ″unique″ ZIP Codes are similar to ordinary ZIP Codes in that they circumscribe their own delivery region.

    Visit our ZIP Codes page for a more in-depth look at the system.

    ZIP Code + 4 Meaning

    1. Those are the codes with which you’re already conversant.
    2. They have the following appearance……and are most often used to denote a destination post office.
    3. The following are the reasons behind this conclusion: Even if you’re shipping a letter from Boston to Seattle, the Massachusetts post office isn’t really concerned with the street address of the intended recipient.
    • You may say that is ″beyond his sphere of competence.″ He only has to know which postal carrier to use in order for the other carrier to deliver the package to the correct location.
    • There is only so much ground that a postal worker can cover in one day.
    • The United States Postal Service (USPS) does not provide the service of delivering in stages because of its standard of delivering in rain, sleet, or snow (some today, some tomorrow).
    • So each particular post office can only service the area that it can reach in a single day.

    It reflects in the ZIP Codes.The majority of the time, a ZIP Code is associated with a post office; that is, every one of the latter has a corresponding one of the first.ZIP Codes may be thought of as a sort of postal address for a certain post office branch.Occasionally, they will handle more than one ZIP Code, but the most of the time, they will work one-on-one with the customer.

    Note that ZIP Codes are not ″boundaries,″ as is commonly believed.The routes themselves are just a collection of routes.They do not adhere to physical or administrative boundaries, and they are capable of crossing city, county, and even state borders.When the delivery trucks arrive, they follow them.

    1. Special circumstances apply to some ZIP Codes.
    2. One type of ZIP Code is designated as ″military,″ and it includes anything from military sites (local and international) to battleships in the oceans.
    3. There are also ZIP Codes that are ″unique.″ Due to the volume of mail that businesses and organizations send and receive, they may be assigned their own ZIP Code.

    Bulk mailing savings are generally available to these organizations because the organization typically has a mail department that (1) presorts mail before delivering it to the USPS and (2) distributes mail internally so that the USPS is not required to do so.As with ordinary ZIP Codes, military and ″unique″ ZIP Codes have their own delivery areas that are circumscribed by the codes themselves.Please see our ZIP Codes page for a more detailed explanation.

    Benefits of Full ZIP+4 Codes

    1. Numerous factors contribute to the good fortune associated with complete ZIP+4 Codes in terms of shipment.
    2. For starters, ZIP+4 Codes are subject to validation, which means that if an address has a ZIP+4 code connected to it, you can be certain that it is legitimate.
    3. Another advantage is that they may assist you in obtaining bulk mailing savings.
    • Another significant advantage of using the final four digits of ZIP Codes is the speed with which packages are delivered.
    • Complete ZIP+4 use on your mail can save processing and delivery times by as much as two days, depending on the volume of mail being sent.
    • If you mark your items correctly, your mail will arrive more quickly, which is great news!
    • I bet you’re scurrying around for those codes right now, don’t you?

    Get those additional four digits.

    ZIP+4 Code Database

    1. Using a CASS Certified USPS address validation vendor, such as Smarty, is often the most convenient approach for many users to gain access to the USPS ZIP+4 database.
    2. Because ZIP+4 codes are updated on a regular basis, data that is even a month old may be erroneous.
    3. Checking addresses against the database on a regular basis can help to guarantee that your data is as clean as it can be.
    • It is also possible to gain access to the ZIP+4 Code database for free directly through the United States Postal Service’s website or through the USPS address validation API.
    • If you elect to use the United States Postal Service’s database directly for obtaining ZIP+4 codes and validating addresses, proceed with caution.
    • The United States Postal Service (USPS) has tight regulations for utilizing their address information, as well as performance constraints that might make your job more difficult.
    • Prior to using their APIs, make sure you read the terms of service for the company.

    Our page on USPS APIs has a thorough list of restrictions and limitations.

    Conclusion | What is My 9 Digit ZIP Code?

    There will be three questions in the quiz:

    1. ZIP+4 codes are used to identify delivery routes.
    2. Using ZIP+4 Codes expedites and improves the accuracy of your mail delivery.
    3. Smarty (previously SmartyStreets) can provide you with such codes
    4. just let us know what you need.
    1. If you only want to test it on one address, you may do it right now by using our single address verification tool.
    2. We process addresses using our lightning-fast USPS address verification API, which returns the right ZIP+4 Code for each address that we process.
    3. Please go ahead and verify the postal address you’ve been given.
    • Alternatively, if you’d rather to speak with a live person, you may phone us at the number above.
    • A fictitious person would be offered instead, but we do not have one of those on staff.) With either case, we can assist you in ZIP-ing your address and ZIP-ing it well.

    ZIP Codes 101 – What Is a ZIP Code & How to Find It

    1. The ″ZIP″ in ZIP Code stands for ″Zone Improvement Plan,″ which is an acronym for ″Zone Improvement Plan.″ A ZIP Code identifies the post office or delivery region to which a letter will be delivered after it has been finalized and sorted for final delivery.
    2. ZIP Codes are used to define delivery routes used by mail carriers, as well as locations served by the United States Postal Service.
    3. To learn more about how they function and how to understand them, continue reading this article.

    What Is My ZIP Code?

    We make it simple to do a ZIP Code lookup for the United States Postal Service. Choose one of the options listed below.

    Enter an address to see the specific ZIP Code +4. Enter a city and state to see the ZIP Codes for that city. Enter a ZIP Code and see the city or cities it covers.
    ZIP Code by Address ZIP Code by City & State Find Cities by ZIP Code
    • What is a ZIP Code and how do they function?
    • What is the meaning of a ZIP Code and how do they work?
    • Instructions on How to Read a ZIP Code
    • ZIP Codes are lines, not shapes, as the name implies.
    • ZIP+4 Codes are used in the United States.

    What is a ZIP Code and how do they work?

    1. Postal ZIP Codes (ZIP Codes) are five-digit identifiers created by the United States Postal Service to identify particular post offices throughout the United States.
    2. A ZIP Code is just the abbreviation for the postal code system used in the United States of America.
    3. Most nations, including the United States, have their own names for their postal code systems.
    • For example, the Indian government refers to its system as ″Postal Index Numbers.″ Postal Routing Numbers are what the Czech Republic refers to as their system.
    • As a result, when you hear the term ″ZIP Code,″ think ″United States.″ The 5-digit ZIP Code is divided into three parts: the national area, the region or city, and the delivery area.
    • The national area is the first component of the ZIP Code, followed by the region or city and the delivery area.
    • The United States Postal Service (USPS) has divided the country into ten ZIP Code zones, each with its own post office.

    They are numbered 0-9.They begin in the northeast and work their way west.The territory covered by each ZIP Code is depicted on the map below: The following is how the first digit of the ZIP Code is assigned:

    ZIP Codes Beginning With States
    0 Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, Puerto Rico, Rhode Island, Vermont, Virgin Islands, Army Post Office Europe, Fleet Post Office Europe
    1 Delaware, New York, Pennsylvania
    2 District of Columbia, Maryland, North Carolina, South Carolina, Virginia, West Virginia
    3 Alabama, Florida, Georgia, Mississippi, Tennessee, Army Post Office Americas, Fleet Post Office Americas
    4 Indiana, Kentucky, Michigan, Ohio
    5 Iowa, Minnesota, Montana, North Dakota, South Dakota, Wisconsin
    6 Illinois, Kansas, Missouri, Nebraska
    7 Arkansas, Louisiana, Oklahoma, Texas
    8 Arizona, Colorado, Idaho, New Mexico, Nevada, Utah, Wyoming
    9 Alaska, American Samoa, California, Guam, Hawaii, Marshall Islands, Federated States of Micronesia, Northern Mariana Islands, Oregon, Palau, Washington, Army Post Office Pacific, Fleet Post Office Pacific

    How to Read a ZIP Code

    1. Following the assignment of the first number in a ZIP Code, the United States Postal Service (USPS) assigns the next two digits based on the location of the city.
    2. If an area has a major town or city, the United States Postal Service (USPS) would frequently award it the first ZIP Codes.
    3. Following that, the ZIP Codes will be shown in alphabetical order.
    • The first three digits of a ZIP Code, when added together, often indicate the sectional center facility to which that ZIP Code belongs, according to most sources.
    • This facility serves as the mail sorting and distribution hub for a certain zone or geographic area or region.
    • Some divisional center facilities have numerous three-digit codes given to them, which makes it difficult to locate them.
    • For example, the Northern Virginia sectional center facility in Merrifield is issued ZIP Codes that begin with the numbers 220, 221, 222, and 223 to distinguish it from other similar facilities.

    The fourth and fifth digits of the ZIP Code show the geographical location of the city or municipality.For example, if a letter is received with a ZIP Code of 47722, the United States Postal Service (USPS) can determine that it is in Indiana (4), Vanderburgh county (77), and the region around the University of Evansville (22)

    ZIP Codes are Lines, Not Shapes

    • ZIP Codes are not assigned based on geographic boundaries such as state borders. In truth, because ZIP Codes are intended only for the purpose of increasing postal efficiency, they may and do transcend county and state lines. As an illustration: 42223 encompasses Christian County, Kentucky, and Montgomery County, Tennessee
    • 97635 contains sections of Lake County, Oregon, and Modoc County, California
    • 51023 and 51001 are located in both Iowa and Nebraska
    • and 42223 spans Christian County, Kentucky, and Montgomery County, Tennessee.
    1. ZIP Codes do not represent physical areas; instead, they identify address groupings or delivery routes.
    2. Although most ZIP Codes may be loosely allocated to a geographic location, ZIP Codes do not represent geographic regions.
    3. As a result, ZIP Code ″areas″ might overlap with one another, be included within another ZIP Code, or have no geographical boundaries at all.
    • For example, ZIP Codes that begin with 095 are issued to the Navy and do not correspond to a specific geographic place as a result.
    • Similarly, ZIP Codes are not allocated to locations that do not have regular postal routes (rural route regions) or areas that do not get mail delivery (undeveloped areas).
    • Because they are based on few delivery routes, the boundary between ZIP Code zones is indeterminate in certain places.
    • See our guidelines on how to locate a county by ZIP Code for further information.

    Whenever a ZIP Code crosses across a county boundary, Smarty (previously SmartyStreets) displays the default county in the line called ‘County Name’ and includes an additional line named ‘Alternate Counties’ in the table.

    ZIP+4 Codes

    1. The United States Postal Service (USPS) modified its ZIP Code system in 1983 to incorporate the new ZIP+4.
    2. A ZIP+4 Code is made up of the original five-digit code plus four more digits, resulting in a complete nine-digit postal code.
    3. With the whole ZIP Code, you may identify any tiny delivery segment, such as a street, a city block, a group of flats, or even a single address, which gets a large amount of mail.
    • Using a ZIP+4 Code is not essential, as it is often computed automatically during the sorting and processing of the mail.
    • ZIP+4 Codes are formatted as follows: As a general rule, each Post Office Box is assigned a unique ZIP+4 code.
    • With a +4 on the ZIP Code, the last four digits of the box number are frequently used, as is zero plus the final three digits of the box number, or if the box number is less than four digit, zeros followed by the box number.
    • Because of this variation, the ZIP+4 Code for each Post Office Box must be searched up individually.

    Not all USPS deliverable addresses have a ZIP+4 code allocated to them, despite the fact that the majority of them do.For some addresses, geocoding lookups or address validation that need a ZIP+4 may not be successful, depending on the address type.While the United States Postal Service may not be able to offer correct geocodes for such addresses, Smarty can still provide roof-top level geocodes for the majority of addresses in the United States.By experimenting with the Smarty US ZIP Code API or reading our ZIP Code API documentation, you can discover further possibilities.

    41,692 ZIP Codes – U.S. Postal Facts

    1. There are a total of 41,683 ZIP Codes in the United States.
    2. The ZIP Codes run from 00501 in Holtsville, New York, which belongs to the Internal Revenue Service, to 99950 in Ketchikan, Alaska.
    3. Which one is the simplest to recall?
    • 12345 is an unusual ZIP Code for General Electric, which is located in Schenectady, New York.
    • Quick!
    • What is the ZIP Code for this location?
    • The United States Postal Service (USPS) created the ZIP Code in 1963.

    The first number reflects a basic geographic region of the country, with ″0″ representing the eastern hemisphere and ″9″ representing the western hemisphere.After that, the following two digits designate regional districts, while the next two numbers designate particular Post Offices or postal zones in big metropolitan areas.By using an international postal code (ZIP+4), which was first used in 1983, mail may be sorted to particular addresses such as specific streets, buildings, residences, and companies.ZIP Codes are now critical components of the United States’ 911 emergency response system.

    ZIP is an abbreviation for Zone or Zoning Improvement Plan.Trademarks Trademarks The United States Postal Service has a large number of trademarks, including the Eagle Logo, the trade dress of USPS packaging, the Letter Carrier Uniform, the Postal Truck, and the following marks: Forever®, Global Express Guaranteed®, IMb®, Informed Delivery®, Intelligent Mail®, Label BrokerTM, Parcel Select®, Post Office®, Pony Express®, Postal Inspection ServiceTM, PostalOne!®, PostalPolice®, PostalProud®, Priority Mail Express International®, Priority Mail Flat Rate®, Priority Mail International Service®, Priority Mail Intenational Service®, Priority Mail International Service®, Priority Mail International Service, Priority This is not an exhaustive list of all trademarks owned by the United States Postal Service.Dollar General®, Forest Stewardship Council®, McDonald’s®, National Dog Bite Prevention Week®, Starbucks®, Subway®, Sustainable Forestry Initiative®, The Climate Registry® are examples of non-postal trademarks.Postal Facts 2022 is a website that gives information on the United States Postal Service to the general public.

    1. Unless otherwise stated, the facts included in this publication may be reproduced solely for the purpose of expressing the fact in its entirety, as well as in a business, informational, or academic context, and in the body of text discussing factual subject matter related to the fact being presented.
    2. However, these data may become out of date after they have been published, thus it is recommended that you acquire the most recent information.
    3. Produced by Corporate Communications for the United States Postal Service The United States Postal Service is scheduled to shut in 2022.

    All intellectual property rights are retained.The United States Postal Service will operate from 2016 through 2022.All intellectual property rights are retained.

    Lowest ZIP Code number – U.S. Postal Facts

    1. The Internal Revenue Service in Holtsville, New York, has the lowest ZIP Code number in the US, 00501, which is unique.
    2. Trademarks Trademarks Trademarks The United States Postal Service has a large number of trademarks, including the Eagle Logo, the trade dress of USPS packaging, the Letter Carrier Uniform, the Postal Truck, and the following marks: Forever®, Global Express Guaranteed®, IMb®, Informed Delivery®, Intelligent Mail®, Label BrokerTM, Parcel Select®, Post Office®, Pony Express®, Postal Inspection ServiceTM, PostalOne!®, PostalPolice®, PostalProud®, Priority Mail Express International®, Priority Mail Flat Rate®, Priority Mail International Service®, Priority Mail Intenational Service®, Priority Mail International Service®, Priority Mail International Service, Priority We are people delivering to peopleTM, ZIP+4®, and ZIP CodeTM, among other things.
    3. This is not an exhaustive list of all trademarks owned by the United States Postal Service.
    • Trademarks that are not associated with the United States Postal Service Dollar General®, Forest Stewardship Council®, McDonald’s®, National Dog Bite Prevention Week®, Starbucks®, Subway®, Sustainable Forestry Initiative®, and The Climate Registry® are just a few of the companies who have lent their support to this cause.
    • Postal Facts 2022 is a website that gives information on the United States Postal Service to the general public.
    • Unless otherwise stated, the facts included in this publication may be reproduced solely for the purpose of expressing the fact in its entirety, as well as in a business, informational, or academic context, and in the body of text discussing factual subject matter related to the fact being presented.
    • However, these data may become out of date after they have been published, thus it is recommended that you acquire the most recent information.

    Produced by Corporate Communications for the United States Postal Service 2022 is the year in question.The United States Postal Service retains ownership of all intellectual property rights.All rights retained by the United States Postal Service from 2016 through 2022.

    ZIP code

    1. Specifically, the ZIP code is a system of postal codes that is used by the United States Postal Service (USPS) to identify places when mail is distributed.
    2. In the United States, ZIP is an abbreviation that stands for Zone Improvement Plan, and this system was developed in order to make postal delivery more efficient, and thus more timely.
    3. Essentially, the format is composed of five number digits: a three-digit prefix designating a regional location, followed by two more digits designating a more local place.
    • It is made up of the five digits of the ZIP code, a dash (-), and four additional digits that help to pinpoint a more specific location inside the ZIP code.
    • The word ZIP Code was initially registered as a servicemark (a form of trademark) by the United States Postal Service, but that registration has since been revoked or cancelled.

    Michigan ZIP codes

    Unless otherwise noted, all ZIP codes in Michigan begin with the numbers 48 or 49. Each of the three-digit prefixes corresponds to a sectional center facility (SCF), which serves as the processing and distribution center for the United States Postal Service. Michigan has eleven SCFs, which are small yet effective.

    SCF cite Prefixes serviced
    Royal Oak 480, 483
    Detroit 481–482
    Flint 484–485
    Saginaw 486–487
    Lansing 488–489
    Kalamazoo 490–491
    Jackson 492
    Grand Rapids 493–495
    Traverse City 496
    Gaylord 497
    Iron Mountain 498–499
    1. Furthermore, the limits of ZIP codes do not necessarily correspond to geopolitical boundaries.
    2. A ZIP code may encompass areas of more than one municipality.
    3. For example, the zip code 48306 is given to Rochester, yet it only encompasses a small area of the city..
    • It serves a significantly greater region of Rochester Hills, Oakland Charter Township, and Goodison than most other similar services.
    • As a result, the United States Postal Service (USPS) allows these localities to be utilized as alternate mailing locations when sending things.

    See also

    ZIP code on Wikipedia

    What Does ″ZIP Code″ Stand For?

    1. The December holiday season coincides with the busiest time of year for the United States Postal Service, when we’re all busy sending out greetings and gifts to family and friends.
    2. However, USPS personnel are extremely busy all year round: postal employees process a staggering 181.9 million pieces of first-class mail each day on average!
    3. To ensure fast and dependable mail delivery, the United States Postal Service (USPS) relies significantly on five- or nine-digit ZIP codes, which are used by 470,000 employees (including 7,000 members of the Fleet of Feet who deliver mail on foot).
    • But, have you ever given any attention to what ZIP codes are in reality?
    • Because we rarely memorize anything other than our home addresses, we tend to overlook the significance of those five digits, aside from the cultural cachet of knowing (or even living in) ″90210.″ Because we rarely memorize anything other than our home addresses, we tend to overlook the importance of those five digits.

    What does ZIP mean?

    1. Zone Improvement Plan (ZIP) is an abbreviation for Zone Improvement Plan.
    2. In fact, the United States Postal Service (USPS) deliberately created the acronym in order to convey the message that mail goes more swiftly when senders include the postal code on their parcels and envelopes.
    3. It stands to reason that the phrase ZIP code would be associated with the word zippy, which literally translates as ″lively″ or ″peppy.″ The main system of ZIP codes that is now in use was established in 1963.
    • Prior to the implementation of this system, the United States Postal Service had a postal zone system that was only applicable to big cities.
    • This is where the ″improvement″ portion of the sentence comes in.
    • The first five digits of a ZIP code are used to identify the location.
    • The first three digits relate to a sectional center facility (or SCF), which is essentially a network of super post offices.

    The remaining digits correspond to a postal code.Those three digits in the ZIP code are shared by all of the post offices in that ZIP code, and all of their mail is sorted and processed by the same SCF.A SCF’s territory is designated by the final two numerals, which represent the individual post office inside that region.

    What is a ZIP+4?

    1. ZIP+4 was the name of a new system that was launched in the 1980s.
    2. The basic code was expanded to include four extra digits (each preceded by a hyphen).
    3. This enabled senders to provide a more accurate location, such as a specific block or apartment building, while composing their messages.
    • In actuality, the last two numerals denote which portion or side of the roadway is being discussed.
    • The increase in the number of post office boxes necessitated the need for this higher degree of accuracy.
    • What about something that is genuinely sent by postal service?
    • Learn more about the differences between absentee and mail-in ballots here!

    Where Was the First Zip Code Issued?

    1. However, ZIP Codes were not always a part of our regular everyday lives in the United States, and they were not always used to identify locations.
    2. As a matter of fact, you may be surprised to learn (in a matter of seconds) how relatively new ZIP Codes are in the broad scheme of things – and why they were formed in the first place.
    3. These days, with ZIP Codes serving as such a critical component of our contemporary postal system, it’s difficult to picture what it would be like to send a package, parcel, or piece of mail without include a ZIP Code.
    • The fact is that we are all so accustomed to include these types of identifiers anywhere on our address labels that taking them out – or perhaps not including them at all – feels entirely and utterly alien.
    • You’ll know a lot more about the history of the ZIP Code (and what an interesting history it has), how ZIP Codes are assigned, if there are any special ZIP Codes, and a bunch of other little factoids about this crucial part of the mailing system that might come in handy during a trivia night contest.
    • So read on for more inside information about the ZIP Code.
    • Are you ready to dive right in?

    Let’s get this party started!

    What is a Zip Code?

    1. Despite the fact that the United States Postal Service (in one form or another) has been carrying mail to addresses all throughout the country since before America was even a country, our ZIP Code system wasn’t officially established until the 1960s, when it was first implemented.
    2. But we’ll get into it a little more in-depth in a second or two.
    3. First and first, it’s critical to understand what a ZIP Code is and why it’s such a vital aspect of today’s postal delivery system.
    • After a postal worker saw how difficult it was to identify different goods, parcels, and envelopes throughout our vast country with any real efficiency in the early 1940s, he came up with the idea of creating a ZIP Code, also known as a Zoning Improvement Plan Code.
    • In 1944, a postal worker by the name of Robert Moon, a Philadelphia-based Postal Inspector, came up with the concept of a national three-digit code that could be used to assign different locations throughout the country – initially attached to major cities and the rural areas surrounding them – to a three-digit code.
    • This was precisely around the time of the conclusion of World War II, when the United States Postal Service was dealing with a massive influx of mail.
    • Meanwhile, troops were returning home and constructing homes left and right – with new addresses sprouting up all over the country – and expansionism was firmly entrenched in the United States of America.

    As a result of all of this mail clogging up the old system of delivering pieces of mail where they needed to go with any real speed, the United States Postal Service (USPS) chose to employ a method that was similar to the one described by Mr.Moon in 1944.Although the United States Postal Service originally intended to use a three-digit system, they ultimately settled on a two-digit local zone number, which they subsequently combined with the three-digit system to create the five-digit system that we know (and love) today.Initial postal codes were two digits in length (for example, the number 16 for Minneapolis), and postal workers were in charge of the rest of the heavy lifting, such as determining exactly where a certain piece of mail was intended to go.

    Where Was the First Zip Code Issued?

    1. Contrary to popular belief, Adjuntas in Puerto Rico received the honor of having the world’s first ZIP Code – or, more specifically, the world’s first five-digit ZIP Code – ever used by the United States Postal Service.
    2. Due to the fact that the ZIP Code system was completely adopted and implemented in 1963, and since the zone maps prepared by the United States depicted Puerto Rico as the ″first″ section of the United States, with the map traveling from right to left throughout the nation, this was the case.
    3. The first ZIP Code in the United States was 00601, and it designated a significant portion of Puerto Rico as the first Zone Improvement Plan (ZIP) in the country.
    • As previously said, the ZIP Codes continued to increase in number as they moved from the East Coast to the West Coast, with ZIP Codes such as 01001 being assigned to Agawam, Massachusetts, and 90210 being assigned to Beverly Hills, California, to name a few examples.
    • Interestingly enough, the lowest ZIP Code number now in use by the United States Postal Service is 00501, which is assigned to the Internal Revenue Service in Holtsville, New York.
    • The ZIP Code with the highest number in the United States Postal Service system is 9950, and that ZIP Code was assigned to Ketchikan, Alaska – which is the westernmost place according to the Zone Improvement Plan mapping scheme, at any rate – in the United States.

    How Are Zip Codes Assigned?

    1. Undoubtedly, one of the most crucial things to understand is that ZIP Codes are not issued or allocated by any precise border that can be found on a typical United States map.
    2. There is a common misconception among those who believe that ZIP Codes are issued by state, or that differing state and town borders aid in the division and designation of various ZIP Code numbers that are associated with distinct locales.
    3. That is not at all how the situation is now unfolding.
    • Instead, ZIP Codes have been divided down and allocated in accordance with the Zone Improvement Plan, which was formed by the United States Postal Service in order to better distinguish distinct delivery routes inside their own internal systems, rather than the previous approach.
    • This is something that many people are astonished to hear, since they did not realize that the entire ZIP Code system was designed to increase overall mailing efficiency and delivery time.
    • But when you start comparing different ZIP Codes on a map, it becomes a lot easier to understand – for example, comparing the ZIP Codes for Christian County, Kentucky and Montgomery County, Tennessee (which are both 42223) or the ZIP Codes for Lake County, Oregon and Modoc County, California (both 97635) – it becomes a lot clearer.
    • Only regional centers of the United States postal system, how different postal routes are assembled, and how the United States Postal Service (USPS) has opted to better break up and construct distinct delivery routes across the board are included in the drawing of the boundaries.

    This is how you wind up with the United States Navy having ZIP Codes that begin with 095, for example, all throughout the country (and in foreign countries) and all having the same ZIP Code.Once you realize that state boundaries are not a decisive factor in how these ZIP Codes were assigned (in fact, they are just incidental to the process), the entire ZIP Code map becomes much easier to comprehend moving forward.

    What’s the Zip Code +4 System?

    1. While the original ZIP Code platform did wonders for making mail delivery a whole lot easier and a whole lot more efficient in the 1960s, the United States Postal Service (USPS) decided in 1983 (20 years after adopting the five digit ZIP Code) to enhance the system even more.
    2. The United States Postal Service (USPS) decided in 1983 to add a fourth digit to the end of its ZIP Code designations, giving these ZIP Codes a complete nine character code and allowing for even faster delivery times.
    3. With these additional four digits, it is now possible to define separate delivery segments along various streets, different city blocks, and even in various apartment groups – which is very useful if one or more neighborhoods receives a large volume of mail that must be delivered.
    • Another thing to note is that none of this has anything to do with geographical boundaries or anything else of the kind.
    • The odds are fairly likely that if you have two apartment buildings directly close to one another in downtown Boston, and both of them get massive amounts of mail on a daily basis, each of them will have its own +4 ZIP Code designation.
    • Although they are physically adjacent to one another and may have consecutive street addresses, the chances of them having consecutive +4 ZIP Code designations (even though they are physically adjacent to one another and may have consecutive street addresses) are slim to none if the apartment building on the left was built in the 1990s and the apartment building on the right was built in the 2000s.

    Are There Any Special Zip Codes Out There?

    1. In addition to the renowned 90210 code for Beverly Hills, which was named after the same television show that we discussed previously, there are a number of other unusual ZIP Codes to consider.
    2. Additionally, we said before that the IRS has exclusive use of the lowest ZIP Code designation in the country, but you might be interesting to hear that just two persons in the country have their own ZIP Code as well.
    3. Neither the President of the United States nor the First Lady of the United States of America have their own unique ZIP Code designations that they – and only them – may use to their advantage.
    • In addition to the President’s ZIP Code (20500–0001), the First Lady’s ZIP Code (20500–0002) is also available.
    • Those ZIP Codes are ″branches″ of the ZIP Code for the White House (20500), and there are a number of additional +4 ZIP Code designations for other branches, offices, and pieces of the White House that have been added on top of that.
    • Smoky Bear, the mascot of the United States Forest Service, is the only other ″person″ who has been assigned their own ZIP Code.
    • In response to his growing popularity and a large advertising campaign launched in order to fight back against forest fires, Smoky began receiving a massive volume of mail in the form of fan letters.

    Smoky’s daily mail volume increased to such an extent that he was assigned the ZIP Code 20252, which he has retained to this day (despite the fact that it was briefly deactivated/decommissioned in the early 1990s).An additional highly intriguing ZIP Code to look into is that of Conyngham, Pennsylvania, which is located in the state of Pennsylvania.There are 2000 people who reside in this town, which uses the ZIP Code 18219, yet they are bordered on all sides by the Pennsylvania town of Sugarloaf, which uses the ZIP Code 18249, which has the ZIP Code 18249.In fact, it is the only spot in the United States where one ZIP Code is completely encapsulated within another ZIP Code!

    Other Interesting Facts You (Probably) Never Knew About Zip Codes

    1. According to the USPS Zone Improvement Plan, as we discussed previously, the ZIP Code is made up of numbers that correlate to a range of various designations inside the ZIP Code.
    2. First and foremost, the code represents the National Area regional code, with the second digits indicating the Sectional Center or the largest regional post office as a subset of the first digit.
    3. After the first five digits, the remaining two digits of the ZIP Code are directly associated with either associated post offices or the actual delivery region.
    • The first two digits of these additions to the ZIP Code are especially for streets that serve large buildings, which is why they are included in the +4 ZIP Code expansion.
    • The second and third codes refer to the side of the street on which the building is located and the exact floor on which the address is located, respectively.

    Choose a Modern Approach to Receiving Mail – US Global Mail

    1. Although utilizing ZIP Codes is an important aspect of how we send packages, parcels, and other pieces of mail through the United States Postal Service, wouldn’t it be nice to have a more current method for getting your mail as well?
    2. It is at this point that US Global Mail comes into action.
    3. Customers of US Global Mail benefit from physical street addresses, mail scanning and mail forwarding solutions, as well as package receiving services (and much more) from the moment they sign up for an account with one of the most innovative, well-respected, and trusted independent mail services in the United States.
    • Those interested in learning a little bit more about all that US Global Postal has to offer, as well as how this contemporary mail service can make their lives a little bit simpler and a lot more comfortable, can visit their website.
    • There’s a good reason why thousands of individuals have made the decision to stop utilizing the United States Postal Service or third-party mail acceptance services and instead to take advantage of everything US Global Mail has to offer.

    The Most Populated Zip Codes in America – 24/7 Wall St.

    1. United States has roughly 327.2 million inhabitants, more than any other country in the Western Hemisphere and the third largest in the world, behind China and India.
    2. Despite having a large population, the United States does not appear to be very congested.
    3. The United States has one of the world’s lowest population densities, with a total land area of nearly 3.7 million square miles.
    • But Americans are not fairly distributed around the country, and many of us have less elbow room than one might expect.
    • A recent analysis from the United States Census Bureau found that rural regions cover more than 97 percent of the nation’s geographic area yet only include 19 percent of the nation’s total human population.
    • This implies that the rest of the population, which accounts for more than 80 percent of the total, lives on barely 3 percent of the land area.
    • 24/7 Tempo analyzed demographic data from roughly 33,000 ZIP codes throughout the United States to determine which ZIP codes were the most densely inhabited in the country.

    Every ZIP code on this list is a component of a large metropolitan region, as indicated by the asterisk.More than half of them are concentrated in New York or Los Angeles, the only two American cities to be included in the top 33 megacities in the world.The allure of living in a city cannot be denied, even if it is not for everyone who does not enjoy the hustle and bustle of city life.A city’s proximity to jobs, entertainment, and culture makes it a more appealing option than other surroundings.

    Some of these ZIP codes are extremely desirable locations to reside since they are located within the most desirable city to live in each state in which they are located.

    Rank ZIP code Population Pop. density (per sq. mile) Metro area
    1 77449 119,204 3,161 Houston, Texas
    2 11368 114,647 41,767 New York, New York
    3 60629 114,129 16,747 Chicago, Illinois
    4 79936 111,918 4,155 El Paso, TX, Texas
    5 90011 108,051 24,240 Los Angeles, California
    6 11385 106,598 27,288 New York, New York
    7 90650 106,404 10,759 Los Angeles, California
    8 77494 105,854 1,509 Houston, Texas
    9 91331 105,696 11,712 Los Angeles, California
    10 77084 104,582 3,105 Houston, Texas
    11 90201 102,878 17,059 Los Angeles, California
    12 10467 102,718 41,479 New York, New York
    13 11226 102,585 78,799 New York, New York
    14 11211 101,560 39,215 New York, New York
    15 11236 100,633 26,113 New York, New York
    16 11220 100,412 55,610 New York, New York
    17 92335 99,791 5,505 Riverside, California
    18 8701 99,467 3,775 New York, New Jersey
    19 11208 99,145 27,446 New York, New York
    20 11234 97,741 11,630 New York, New York
    21 90250 97,371 13,920<

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