United States ZIP Codes

US ZIP codes are a type of postal code used within the United States to help the United States Postal Service (USPS) route mail more efficiently. ZIP codes near me are shown on the map above. Some still refer to ZIP codes as US postal codes. The term ZIP stands for Zone Improvement Plan. The basic 5-digit format was first introduced in 1963 and later extended to add an additional 4 digits after a dash to form a ZIP+4 code. The additional 4 digits help USPS more precisely group mail for delivery. Though ZIP codes were originally developed for USPS, many other shipping companies such as United Parcel Service (UPS), Federal Express (FedEx), DHL, and others make use of ZIP codes for sorting packages and calculating the time and cost of shipping a package (the shipping rate).

The United States Postal Service (USPS) has utilized ZIP codes since 1963 to improve mail delivery efficiency. ZIP codes, standing for “Zone Improvement Plan,” are essential for sorting and delivering mail accurately. They consist of five digits, with an optional four-digit extension for more precise locations.

• 0xxxx: Northeastern states
• 1xxxx: Delaware, New York, Pennsylvania
• 2xxxx: District of Columbia, Maryland, North Carolina, South Carolina, Virginia, West Virginia
• 3xxxx: Alabama, Florida, Georgia, Mississippi, Tennessee
• 4xxxx: Indiana, Kentucky, Michigan, Ohio
• 5xxxx: Iowa, Minnesota, Montana, North Dakota, South Dakota, Wisconsin
• 6xxxx: Illinois, Kansas, Missouri, Nebraska
• 7xxxx: Arkansas, Louisiana, Oklahoma, Texas
• 8xxxx: Arizona, Colorado, Idaho, New Mexico, Nevada, Utah, Wyoming
• 9xxxx: Alaska, American Samoa, California, Guam, Hawaii, Northern Mariana Islands, Oregon, Washington

ZIP Codes by State

Special ZIP Codes

Certain ZIP codes are unique and hold special designations:

• 00501: Internal Revenue Service center in Holtsville, NY
• 12345: General Electric in Schenectady, NY
• 60606: Chicago Loop
• 90210: Beverly Hills, CA, famously known due to popular culture

ZIP Code Extensions

The five-digit ZIP code system was expanded in 1983 with ZIP+4 codes to further improve mail sorting. These codes add a hyphen and four additional digits to the basic five-digit code, which identify a more specific location like a building, apartment group, or a P.O. Box.

For example:

• 12345-6789 indicates a specific area within the 12345 ZIP code.

ZIP Code Facts and Trivia

• Oldest ZIP Code: The first ZIP code assigned was 00501, which is used by the IRS.
• Most Populous ZIP Code: 77449 in Katy, Texas, with over 120,000 residents.
• Smallest ZIP Code by Area: 10199 in New York City, which is just one building.

FAQs

What is the ZIP Code for the USA?

The USA uses a system of ZIP Codes, which are 5-digit numbers. Each ZIP Code corresponds to a specific area within the country. There is no single ZIP Code for the entire USA.

What is a valid US ZIP Code?

A valid US ZIP Code consists of 5 digits, such as 90210. There are also ZIP+4 Codes, which add a hyphen and four additional digits for more precise locations, like 90210-1234.

Is there a 4-digit ZIP Code in the US?

No, US ZIP Codes are either 5 digits (standard ZIP Code) or 9 digits (ZIP+4 Code).

What is the ZIP Code range for the USA?

The ZIP Code range for the USA starts at 00501 (Holtsville, NY) and goes up to 99950 (Ketchikan, AK).

What ZIP Code is 84198?

ZIP Code 84198 is in Salt Lake City, Utah.

What is USA ZIP?

USA ZIP is a system of postal codes used by the United States Postal Service (USPS) to identify locations within the country. “ZIP” stands for “Zone Improvement Plan.”

How to write a full ZIP Code?

A full ZIP Code (ZIP+4) is written as follows: 12345-6789, where “12345” is the standard ZIP Code and “6789” is the additional 4 digits.

What is an example of a US address?

John Doe
123 Main Street
Springfield, IL 62701
USA

How to read a USA ZIP Code?

A USA ZIP Code is read as a 5-digit number, sometimes followed by a hyphen and four additional digits for more precise locations (ZIP+4). For example, 12345 or 12345-6789.

What ZIP Code is 60653?

ZIP Code 60653 is in Chicago, Illinois.

What is the ZIP Code of USA New York?

New York City has multiple ZIP Codes. For example, Manhattan’s ZIP Code ranges from 10001 to 10282.

What is the ZIP Code for USA, Texas?

Texas has many ZIP Codes. For example, Houston has ZIP Codes ranging from 77001 to 77299.

What is the ZIP Code of USA, California?

California has many ZIP Codes. For example, Los Angeles has ZIP Codes ranging from 90001 to 90089.

Search by Map

Interactive map of zip codes in the United States. Just click on the location you desire for a postal code/address for your mails destination. You can also enlarge the map to see the boundaries of US zip codes.