US Address, ZIP Code & Area Code Lookup

Verify any US address, ZIP code, or area code instantly

33,788 ZIP Codes
28,113 Cities
56 States

Frequently Asked Questions

What is a ZIP code?

A ZIP code is a postal code used by the United States Postal Service (USPS). The term ZIP stands for Zone Improvement Plan. ZIP codes are five-digit numbers that identify specific geographic delivery areas.

How do I verify a US address?

You can verify a US address by searching for it in our database. Enter the street address, city, or ZIP code in the search box above. Our system will validate the address against USPS records and provide detailed location information.

Are ZIP codes unique to each city?

No, ZIP codes are not unique to cities. A single ZIP code can span multiple cities, and large cities often have many ZIP codes. ZIP codes are based on mail delivery routes, not municipal boundaries.

What is the difference between a city and a ZIP code?

A city is a municipal boundary defined by local government, while a ZIP code is a postal delivery zone defined by USPS. They often overlap but do not match exactly. One city can have multiple ZIP codes, and one ZIP code can include parts of multiple cities.