Larkspur city, California
Official LSAD Designation: Larkspur city • Census GEOID: 0640438
• Marin County
Larkspur city is an incorporated city in Marin County, California. According to official records from the Census (2025), Larkspur city had an estimated population of 12,620 residents. Official Census Bureau geographic records classify this community under LSAD designation Larkspur city (GEOID 0640438).
Local Government Administration U.S. Census Bureau GMAF
City Of Larkspur
Municipal
Official Title:
Finance Director
Address:
400 MAGNOLIA AVE, LARKSPUR CA 94939-2035
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 | 12,620 | 2025 |
| Median Household Income | $140,417 | 2020-2024 |
| Median Home Value | $1,996,600 | 2020-2024 |
| Land Area | 3.00 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).