USPS ZIP code Finder, ZIP Code Lookup
ZIP Code by State
Enter a city and state to see the ZIP Codes for that city. This zip code finder will help you to find a zip code
Search by ZIP Code
Enter a ZIP Code and see the city or cities it covers. USPS address lookup by zip code
Search by Address
Enter an address to see the specific ZIP Code. What is the ZIP code for this address
What is a Zip Code
A ZIP Code is a postal code used by the United States Postal Service (USPS). Introduced in 1963, the basic format consisted of five digits. In 1983, an extended ZIP+4 code was introduced, it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location. The term ZIP is an acronym for Zone Improvement Plan. it was chosen to suggest that the mail travels more efficiently and quickly. when senders use the code in the postal address.
Types of Zip Codes
- Unique/single high volume address (ex. 20505 for the CIA in Washington, DC)
- PO Box only (ex. 22313 for the PO Boxes of Alexandria, VA)
- Military
- Standard (all other ZIP codes)
USPS ZIP code Lookup by State
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