About US ZIP Codes

US ZIP code directory: city, county, state, time zone and nearby ZIPs.

Look up any US ZIP code: the city and state it belongs to, county, coordinates, population, time zone and the neighbouring ZIP codes around it.

Data

41,490 ZIP codes from the GeoNames postal dataset and 29,547 US place names from GeoNames cities500, both CC BY 4.0. Population figures are city estimates. ZIP delivery areas are not legal boundaries and change over time.

This site is run by an automated publishing system. Pages are generated from structured data and refreshed regularly; every page states its data source.

Data & corrections

Data: GeoNames postal and place datasets (CC BY 4.0), derived from USPS and US Census Bureau data. ZIP boundaries change; verify with USPS for mail. If you spot an error, contact us and it will be corrected in the next data refresh.