San Geronimo Flag

San Geronimo

County:
Marin County
County Seat:
No
Area (mi²):
1.508
State:
California

San Geronimo is a CDP located in Marin County, California. San Geronimo has a 2026 population of 589. San Geronimo is currently growing at a rate of 1.55% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in San Geronimo is $171,932 with a poverty rate of 0%. The median age in San Geronimo is 46.5 years: 46.1 years for males, and 46.9 years for females. For every 100 females there are 195.9 males.

589
Total Population
390
Density (mi²)
9 1.55%
Growth

San Geronimo Population

San Geronimo Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202658991.55%
202558091.58%

Median Age

Overall: 46.5 years
Female: 46.9 years
Male: 46.1 years

San Geronimo Adults

There are 471 adults, (133 of whom are seniors) in San Geronimo.

Sex Ratio

Female: 197 (33.8%)
Male: 386 (66.2%)

Demographics

The racial composition of San Geronimo includes 89.88% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White52489.88%
Two or more races589.95%
Black or African American10.17%
Race
Population ↓
Percentage (of total)
White203.43%
Race
Population ↓
Percentage (of total)
White50486.45%
Two or more races589.95%
Black or African American10.17%

San Geronimo Marital Status

Economics and Income Statistics

San Geronimo 's average per capita income is $150,625. Household income levels show a median of $171,932. The poverty rate stands at 0%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Households$171,932$221,088
Families-$247,326
Married Families--
Non Families--

$150,625

Average Income

$171,932

Median Household Income

0%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)