Question 1

How do I find a ZIP code by city or state?

Accepted Answer

Use our ZIP code lookup tool to search by city, state, or address and instantly view related ZIP codes.

Question 2

What is a ZIP+4 code?

Accepted Answer

A ZIP+4 code adds four extra digits to a standard ZIP code to help USPS sort and deliver mail more accurately.

Question 3

Are ZIP codes the same as postal codes?

Accepted Answer

ZIP codes are the postal code system used in the United States. Other countries use different postal code formats.