Mill Valley city, California
Official LSAD Designation: Mill Valley city • Census GEOID: 0647710
• Marin County
Mill Valley city is an incorporated city in Marin County, California. According to official records from the Census (2025), Mill Valley city had an estimated population of 13,799 residents. Official Census Bureau geographic records classify this community under LSAD designation Mill Valley city (GEOID 0647710).
Local Government Administration U.S. Census Bureau GMAF
City Of Mill Valley
Municipal
Official Title:
Assistant To The City Mgr
Address:
26 CORTE MADERA AVE, MILL VALLEY CA 94941-1830
County Of Marin
County
Official Title:
County Adminstrator
Address:
3501 CIVIC CENTER DR, RM 325, SAN RAFAEL CA 94903-4176
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 13,799 | 2025 |
| Median Household Income | $206,212 | 2020-2024 |
| Median Home Value | $2,000,000+ | 2020-2024 |
| Land Area | 4.78 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).