About

ZIPSFIELD is an independent field guide to US postal places. Search a code, explore a state, or compare two places—without creating an account.

ZIP codes organize mail delivery, not administrative boundaries. A code can have several city or county associations. Coordinates are approximate; verify delivery addresses with your carrier.

Coverage reflects the publisher’s files, including separately imported territories and military postal regions. No guarantee of a complete or current USPS master list. Map outlines show states, not ZIP boundaries.