Clayton city, California
Official LSAD Designation: Clayton city • Census GEOID: 0613882
• Contra Costa County
Clayton city is an incorporated city in Contra Costa County, California. According to official records from the Census (2025), Clayton city had an estimated population of 10,842 residents. Official Census Bureau geographic records classify this community under LSAD designation Clayton city (GEOID 0613882).
Local Government Administration U.S. Census Bureau GMAF
City Of Clayton
Municipal
Official Title:
City Clerk/ Hr
Address:
6000 HERITAGE TRL, CLAYTON CA 94517-1250
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 | 10,842 | 2025 |
| Median Household Income | $175,707 | 2020-2024 |
| Median Home Value | $1,055,200 | 2020-2024 |
| Land Area | 3.84 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).