Walnut Creek ZIP Codes

List of Zip Codes of Walnut Creek

The following table lists ZIP Codes associated with Walnut Creek, California, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude County Population Density
1 94595 37.87206 -122.06892 Contra Costa 17,051 1261.6
2 94596 37.88902 -122.03676 Contra Costa 23,592 1502.5
3 94597 37.91768 -122.0718 Contra Costa 24,235 2308.8
4 94598 37.89238 -121.98283 Contra Costa 26,293 492.5


About Walnut Creek California Zip Codes

The city of Walnut Creek in California (CA) is served by approximately 4 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 91,171 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Walnut Creek fall within county jurisdictions such as Contra Costa. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Walnut Creek, California follow the America/Los_Angeles time zone.