San Geronimo, CA demographics:
population, income, and more

Total population
583
3.7% year-over-year change
Median household income
$171,932/yr
-16.7% year-over-year change
Housing units
207
6.2% year-over-year change

San Geronimo population

How many people live in San Geronimo

San Geronimo is home to 583 residents, according to the most recent Census data. Gender-wise, 66.2% of San Geronimo locals are male, and 33.8% are female.

Total population
583
3.7% year-over-year change
Gender ratio
Male
66.2%
386
Female
33.8%
197
Value Percent YoY change
Male 386 66.2% 18.8%
Female 197 33.8% -16.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in San Geronimo is 46, with the population distributed as follows: about 11% are children under 15, then 27.1% are in the 15 to 24 age group. Adults between 25 and 44 make up 3.4% of the population, while another 35.7% fall into the 45 to 64 bracket. Finally, around 22.8% are 65 or older.

Median age
46.5
Age breakdown
Under 15
11%
15 to 24
27.1%
25 to 44
3.4%
45 to 64
35.7%
Over 65
22.8%
Value Percent YoY change
Under 15 64 11% 220.0%
15 to 24 158 27.1% -23.7%
25 to 44 20 3.4% -9.1%
45 to 64 208 35.7% 3.0%
Over 65 133 22.8% 19.8%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In San Geronimo, 78.2% of the population are US-born citizens, while 21.8% have gained naturalized citizenship. There’s also a share of 10% that includes residents with two or more races.

Citizenship
U.S.-born citizens
78.2%
Non-U.S.-born citizens
21.8%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 456 78.2% -2.8%
Non-U.S.-born citizens 127 21.8% 36.6%
Racial breakdown
White
89.9%
Black or African American
0.2%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
10%
Other
0%
Value Percent
White 524 89.9%
Black or African American 1 0.2%
Two or more races 58 10%

Households in San Geronimo

A peek inside San Geronimo households

San Geronimo has 207 households, with an average of 3 members in each. Of these, 70.5% are families, while the remaining 29.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
207
6.2% year-over-year change
Average people per household
3
Non-family households
61
Family households
146
Value Percent YoY change
Non-family households 61 29.5% 17.3%
Family households 146 70.5% 2.1%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in San Geronimo

The housing landscape of San Geronimo

San Geronimo's housing consists of 207 units, with 81.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 18.8% and offer a more compact, shared living style.

Housing units
207
6.2% year-over-year change
Housing types
Value Percent
1 unit, detached 168 81.2%
1 unit, attached 39 18.8%
Homes built since 2020
0
% year-over-year change

The age of buildings in San Geronimo

In San Geronimo, the median construction year is 1978. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 50 24.2% 0.0%
Built between 1950 and 1959 30 14.5% N/A
Built between 1960 and 1969 13 6.3% N/A
Built between 1970 and 1979 13 6.3% -71.1%
Built between 2000 and 2009 60 29% 15.4%
Built between 2010 and 2019 41 19.8% 36.7%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

San Geronimo occupancy rates

Out of the 207 occupied housing units in San Geronimo, 90.3% are owner-occupied, while 9.7% are lived in by tenants.

Occupied housing units
207
6.2% year-over-year change
Occupancy breakdown
Renter occupied
20
Owner occupied
187
Value Percent YoY
change
Renter occupied 20 9.7% -9.1%
Owner occupied 187 90.3% 8.1%
Unoccupied housing units
0.0%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

San Geronimo housing costs

Median housing costs per month
$1,621/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in San Geronimo

San Geronimo education at a glance

About 2.3% of the population in San Geronimo went to high school, while 22.1% pursued college studies. Another 3.2% earned an associate degree and 14.4% hold a bachelor’s. Meanwhile, 58% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 11 2.3% -77.1%
College diploma 104 22.1% 20.9%
Associate degree 15 3.2% -46.4%
Bachelor's degree 68 14.4% 106.1%
Graduate degree 273 58% 4.6%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in San Geronimo

How much people earn in San Geronimo

The average annual household income in San Geronimo was $221,088 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -26.6% change from the previous year. At the same time, the median income stood at $171,932, reflecting a -16.7% shift over the same period.

Average household income in San Geronimo
$221,088/year
-26.6% year-over-year change
Median household income in San Geronimo
$171,932/year
-16.7% year-over-year change

San Geronimo income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $250,001 overall. Overall, 100% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $250,001 0.0%
Over 65 $171,932 N/A
Above poverty level
580
Below poverty level
0
Value Percent YoY
change
Above poverty level 580 100% 3.6%

Employment in San Geronimo

Workforce and job types in San Geronimo

The job market in San Geronimo is powered by 289 working residents, spread across a range of industries and roles.

Workforce demographics

Working population
289
5.1% year-over-year change
White collar
289
Blue collar
0
Value Percent YoY change
White collar 289 100% 5.1%
Employer type
Self employees
20.8%
Private companies
61.6%
Governmental workers
0%
Not for profit companies
17.6%
Value Percent YoY change
Self employees 60 20.8% -11.8%
Private companies 178 61.6% 28.1%
Not for profit companies 51 17.6% -25.0%

Transportation in San Geronimo

How people get around in San Geronimo

Commuting methods vary: 69.6% of residents travel by personal vehicle and 1.7% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 201 69.6% -4.3%
Bicycle 19 6.6% N/A
Walk 5 1.7% -61.5%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in San Geronimo by zipcode?

Zipcode Population Number of households Median income Average income
94963 739 239 $210,823 $234,562

Explore more communities

FAQs about San Geronimo demographics 

What is the total population of San Geronimo?

San Geronimo has a total population of 583 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +3.7% compared to a year ago.

What is the gender ratio in San Geronimo?

The gender ratio in San Geronimo is as follows:
  • 66.2% males (386 residents)
  • 33.8% females (197 residents)

What is the median age in San Geronimo?

The median age in San Geronimo is 46.5.

What is the age distribution of the population in San Geronimo?

The age distribution in San Geronimo is as follows:
  • Under 15: 11% (64 residents)
  • Ages 15-24: 27.1% (158 residents)
  • Ages 25-44: 3.4% (20 residents)
  • Ages 45-64: 35.7% (208 residents)
  • Over 65: 22.8% (133 residents)

What is the racial and ethnic makeup of San Geronimo?

The racial and ethnic makeup of San Geronimo is as follows:
  • White: 89.9% (524 residents)
  • Black or African American: 0.2% (1 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 10% (58 residents)
  • Other: 0% (0 residents)

What percentage of the population in San Geronimo are U.S.-born citizens?

U.S.-born citizens represent 78.2% of the population in San Geronimo.

How many housing units are there in San Geronimo?

There are 207 housing units in San Geronimo, reflecting a +6.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in San Geronimo and what is the average household size?

San Geronimo has a total of 207 households, with an average of 3 people in each.

What is the median household income in San Geronimo?

San Geronimo has a median household income of $171,932, representing a -16.7% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for San Geronimo?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 100% (289 residents)
  • Blue-collar workers: 0% (0 residents)

Places of employment:
  • Self-employed: 20.8% (60 residents)
  • Private companies: 61.6% (178 residents)
  • Governmental workers: 0% (0 residents)
  • Not-for-profit companies: 17.6% (51 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025