Checked
San Geronimo, CA
Census-designated place in Marin County, California. ZIP codes: 94963.
Population
583
Land area
1.5sq mi
People per sq mi
386
ZIP codes
1
San Geronimo and its ZIP codes
San Geronimo at a glance
- San Geronimo is 53% denser than California as a whole.
- The median household income is $171,932, 73% above the California median of $99,122.
- A typical owner-occupied home is valued at $1,175,500 (60% above California).
Local data for San Geronimo, CA
Counts from official public data
Housing and community stats
San Geronimo, CA, American Community Survey 2020-2024
Median household income
$171,932
Poverty rate
0.0%
Median home value
$1,175,500
Homeownership
90.3%
Bachelor's or higher
94.5%
Median age
46.5
Average commute
26.4 min
Largest reported origins and ancestries: Russian Americans (218), German Americans (61), Norwegian Americans (43).
Economy and federal money
Jobs, pay, income and spending are for Marin County. PPP loans are for San Geronimo.
Unemployment rate
4.3%
Sep 2026, -0.2 pts in a year
Average annual pay
$94,975
110,071 jobs, 2025
Income per person
$190,891
BEA, 2024
Federal spending
$2B
FY 2026, $7,499 per person
PPP loans
$851K
27 loans, 114 jobs reported
How people get to work
San Geronimo, CA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone69.6%
- Carpooled0.0%
- Public transit0.0%
- Walked1.7%
- Bicycle6.6%
- Taxi, ride-hailing, motorcycle or other0.0%
- Worked from home22.1%
Average one-way commute: 26.4 minutes for people who do not work from home.
Environment and hazard risk
San Geronimo, CA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: landslide
Storm events since 1996
549
Countywide, mostly strong wind
Flood insurance policies
4,542
5.4% of homes, county
July high / Jan low
81° / 43°F
34.5 inches of rain a year
Health statistics
Share of adults in San Geronimo, CA, CDC PLACES estimates
Obesity
22.0%
U.S. 33.3% -11.3 pts
Diabetes
10.9%
U.S. 12.1% -1.2 pts
Smoking
8.3%
U.S. 12.8% -4.5 pts
Uninsured (18-64)
3.8%
U.S. 11.1% -7.3 pts
ZIP codes in San Geronimo
1 in or overlapping San Geronimo. Population shown
Cities near San Geronimo
| Name | Distance | Land area (sq mi) |
|---|---|---|
| WoodacreCensus-designated place | 1.3 mi | 1.8 |
| Lagunitas-Forest KnollsCensus-designated place | 1.6 mi | 4.2 |
| FairfaxTown | 3.9 mi | 2.2 |
| Sleepy HollowCensus-designated place | 4 mi | 3 |
| NicasioCensus-designated place | 4.3 mi | 1.3 |
| San AnselmoTown | 5.2 mi | 2.7 |
| Lucas Valley-MarinwoodCensus-designated place | 5.4 mi | 5.7 |
| RossTown | 6.2 mi | 1.6 |
| BolinasCensus-designated place | 6.5 mi | 5.8 |
| KentfieldCensus-designated place | 6.9 mi | 3 |
| Stinson BeachCensus-designated place | 7.8 mi | 0.9 |
| LarkspurCity | 8.4 mi | 3 |
| San RafaelCity | 8.4 mi | 16.6 |
| NovatoCity | 8.8 mi | 27.4 |
| Santa VenetiaCensus-designated place | 8.8 mi | 3.7 |
| Mill ValleyCity | 9.3 mi | 4.8 |
Frequently asked questions
- What county is San Geronimo, CA in?
- San Geronimo is in Marin County, California.
- What ZIP codes are in San Geronimo, CA?
- ZIP codes in or overlapping San Geronimo include 94963.
- What is the population of San Geronimo, CA?
- About 583 people live in San Geronimo, based on American Community Survey 5-year estimates.
- What cities are near San Geronimo?
- Nearby places include Woodacre (1.3 mi), Lagunitas-Forest Knolls (1.6 mi), Fairfax (3.9 mi), Sleepy Hollow (4 mi), Nicasio (4.3 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023