Walnut Creek city, California
Official LSAD Designation: Walnut Creek city • Census GEOID: 0683346
• Contra Costa County
Walnut Creek city is an incorporated city in Contra Costa County, California. According to official records from the Census (2025), Walnut Creek city had an estimated population of 70,012 residents. Official Census Bureau geographic records classify this community under LSAD designation Walnut Creek city (GEOID 0683346).
Local Government Administration U.S. Census Bureau GMAF
City Of Walnut Creek
Municipal
Official Title:
Deputy City Clerk
Address:
1666 N MAIN ST, WALNUT CREEK CA 94596-4661
County Of Contra Costa
County
Official Title:
Chairman
Address:
651 PINE ST, RM 108A, MARTINEZ CA 94553-1229
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 70,012 | 2025 |
| Median Household Income | $130,432 | 2020-2024 |
| Median Home Value | $1,057,300 | 2020-2024 |
| Land Area | 19.76 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).