United States Zip Codes

There are over 40,000 ZIP codes across the United States, each representing a specific area or region. To locate a ZIP code, simply select your state from the list below. From there, you’ll gain access to a detailed list of cities and an interactive map showcasing ZIP code boundaries for that state.

Alternatively, you can use our “Search” tool, which quickly brings your zip code, making it fast and hassle-free.

States ZIP Codes

Federal District ZIP Codes

Territories ZIP Codes

ZIP Codes USA Map

The ZIP Code system, created by the United States Postal Service (USPS) in 1963, made sending and receiving mail faster and more reliable. The name ZIP, short for Zone Improvement Plan, was chosen to give the impression of mail “zipping” through the system when these codes were included in addresses.

Originally, ZIP Codes were simple—just five digits. But in 1983, the USPS introduced the ZIP+4 format to make things even more precise. This added a hyphen and four extra numbers to the original five digits, narrowing down the location to a specific building, block, or organization within a ZIP Code area.

By using ZIP Codes, we’ve made mailing more efficient and accurate, helping letters and packages find their way to the right destination more quickly. It’s a small detail that has made a big difference in how we stay connected.