Foster City city, California
Official LSAD Designation: Foster City city • Census GEOID: 0625338
• San Mateo County
Foster City city is an incorporated city in San Mateo County, California. According to official records from the Census (2025), Foster City city had an estimated population of 32,411 residents. Official Census Bureau geographic records classify this community under LSAD designation Foster City city (GEOID 0625338).
Local Government Administration U.S. Census Bureau GMAF
City Of Foster City
Municipal
Official Title:
Mayor
Address:
610 FOSTER CITY BLVD, FOSTER CITY CA 94404-2299
County Of San Mateo
County
Official Title:
Deputy County Manager
Address:
400 COUNTY CTR, REDWOOD CITY CA 94063-1668
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 32,411 | 2025 |
| Median Household Income | $199,143 | 2020-2024 |
| Median Home Value | $1,838,200 | 2020-2024 |
| Land Area | 3.79 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).