ZIP code · Walnut Creek · California · United States
ZIP code 94596 — Walnut Creek
ZIP code 94596 serves Walnut Creek, California.
- Postal code
- 94596Single source Value from one source, not cross-checked.
- City
- Walnut Creek
- County
- Contra Costa
- State
- California
- Country
- United States
- Coordinates
- 37.9053, -122.0549 — precision precise (locality)
View on OpenStreetMap - Population
- 23,592 (ZCTA, ACS 5-year)
- Median household income
- $137,660
- Median age
- 37.5
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page