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Welcome to our U.S. territories ZIP Code database, featuring 861 ZIP Codes, 139 cities, 88 counties, and over 317,020 ZIP+4 Codes. Each 9-digit ZIP Code corresponds to one or more addresses within the U.S. territories.
Additionally, this site offers several address-related tools, including address validation, full ZIP Code search, and random address generator.
Random Address Generator
US Address Validation
Full ZIP Code Search
ZIP Code Radius Search
State List
Our database of 45 million 9-digit ZIP+4 Codes is organized into separate websites for each of the 50 states and the District of Columbia. You can find more information such as ZIP Codes, ZIP+4 Codes, and city and county details. Below is the list of U.S. states. Click on the title to see the detailed ZIP Code information for that state.
Other Areas
In addition to the states, the United States also includes some military areas and other islands that have been assigned ZIP Codes. Click the button to view more information.
U.S. Territory Dataset
Counties in U.S. Territories
ZIP Code
How to Address a U.S. Envelope?
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First, you need to fill in the recipient's mailing information in the center of the envelope. The first line is the recipient's name, the second line is the street address with a detailed house number, and the last line is the city, state abbr, and ZIP Code.
Second, write the sender's information on the left top corner of the envelope. If your mail cannot be delivered, it will return to the sender's address.
Finally, don't forget to stick the stamp on the right top corner. Otherwise, the letter will not go into the delivery process.
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For more explanation, please read the official document: USA.pdf (English)
