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California ZIP Codes
Marin County
San Geronimo, CA
94963
94963 ZIP Code — San Geronimo, CA
Marin County, California
ZIP code 94963 is located in
San Geronimo ,
California ,
within Marin County .
It covers approximately 1.60 square miles and serves a population of
462 residents.
This is a standard ZIP code in the Pacific (PT) timezone,
served by area code 415/628 .
About ZIP code 94963
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $1,103,600. Owner-occupancy is high at 90%, well above the national average.
The gap between median ($215,375) and mean household income suggests income inequality — a small number of higher earners pull the average up. 58% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average. Remote work is prevalent — 21% of workers work from home.
Educational attainment is high — 86% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Overall, ZIP code 94963 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.
94963 ZIP code map
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Cities in ZIP code 94963
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Demographics
updated 06/2026
Population
Total population
462
Population density
289 / sq mi
State FIPS
06
County FIPS
041
Geography
Land area
1.60 sq mi
Water area
0.00 sq mi
Latitude
38.0042
Longitude
-122.6774
Timezone
Pacific (PT)
Area code
415/628
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
20.0%
21.4%
32.6%
$50k – $100k
0.0%
21.0%
27.7%
$100k – $200k
67.5%
27.8%
26.4%
Over $200k
12.5%
29.8%
13.3%
Demographics & statistics
$215,375
Median household income
$113,616
Per capita income
$1,103,600
Median home value
85.9%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 93 20.1% 18 and over 369 79.9% 65 and over 119 25.8% Median age 46.4 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
20.0%
21.4%
32.6%
$50k – $100k
0.0%
21.0%
27.7%
$100k – $200k
67.5%
27.8%
26.4%
Over $200k
12.5%
29.8%
13.3%
Range % of households $15k–$25k 10.2% $50k–$75k 12.7% $150k–$200k 26.1% $200k+ 51.0% Median income $215,375
Housing
Housing overview
Metric Value Median home value $1,103,600 Median rent / month $0 Owner occupied 89.8% Renter occupied 10.2% Vacant 0.0% Single-family detached 82.8% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 6.0 Avg household size (owned) 3.16
Year built
Era % 2020 or later 0.0% 2010–2019 15.9% 2000–2009 17.2% 1990–1999 0.0% 1980–1989 0.0% 1970–1979 12.7% 1960–1969 10.2% 1950–1959 0.0% 1940–1949 14.6% 1939 or earlier 29.3%
Bedrooms
Size % of units No bedroom (studio) 10.2% 1 bedroom 0.0% 2 bedrooms 12.7% 3 bedrooms 45.2% 4 bedrooms 31.8% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 26.1% 2 vehicles 12.7% 3 or more 61.1%
Heating fuel
Fuel type % Utility gas 31.8% Electricity 38.9% Propane / LP gas 16.6% Wood 12.7%
Households & families
Household type Count % Married-couple family 100 63.7% Cohabiting couple 0 0.0% Male householder, no spouse 41 26.1% Female householder, no spouse 16 10.2% Households with children under 18 70 44.6% Households with seniors (65+) 71 45.2% Average household size 2.94
Marital status
Status Male Female Never married 58.9% 40.4% Married 41.1% 51.3% Separated 0.0% 0.0% Widowed 0.0% 0.0% Divorced 0.0% 8.3%
Education
Some college, no degree
0.0%
Graduate / professional
65.2%
Metric % HS diploma or higher 93.1% Bachelor's or higher 85.9%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 0 0.0% Elementary school 22 14.5% High school 71 46.7% College / grad school 59 38.8%
Employment
Industry of employment
Education & healthcare
30.2%
Arts, food & hospitality
24.4%
Finance & real estate
22.7%
Professional & management
9.5%
Transportation & utilities
6.6%
Occupation
Category % Management, business & arts 95.9% Service 0.0% Sales & office 4.1% Natural resources & construction 0.0% Production & transportation 0.0%
Employment type
Type % Private sector 87.6% Government 4.1% Self-employed 8.3% Unpaid family workers 0.0%
Commute
Method % Drive alone 79.3% Carpool 0.0% Public transit 0.0% Walk 0.0% Work from home 20.7% Other means 0.0% Avg commute (minutes) 23.9
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 58.0% Retirement income 42.0% Supplemental Security 0.0% Cash public assistance 12.7% Food stamps / SNAP 10.2%
Health indicators
Condition % Obesity 26.5% High blood pressure 30.3% High cholesterol 34.2% Diabetes 10.1% Heart disease 6.6% Stroke 2.9% Asthma 10.2% Arthritis 27.2% Kidney disease 3.0% Pulmonary disease 6.8% Cancer 8.1%
Behavior / access % Smoking 10.5% Binge drinking 16.9% No physical activity 15.4% Less than 7 hrs sleep 27.4% Depression 18.2% Fair or poor health 12.2% Poor mental health 12.9% Poor physical health 10.0% No health insurance 6.0% Visited doctor (checkup) 68.8% Visited dentist 72.7% Cholesterol screening 94.7% Teeth loss 7.5%
Veterans & disability
Veterans Count % Civilian veterans 19 5.1%
Disability % Any disability 7.6% Under 18 0.0% 18–64 years 6.4% 65 and over 16.0%
Health insurance coverage
Type % Private insurance 87.0% Public insurance 42.3% No insurance 0.0% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 462 100.0% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 388 84.0% Born in same state 388 84.0% Born in different state 150 32.5% Foreign born 0 0.0% Naturalized citizen 74 16.0% Not a US citizen 74 100.0%
Ancestry
Ancestry Count % French 69 14.9% Italian 58 12.6%
Ancestry Count % German 20 4.3%
Technology access
Metric % of households Computer access 34.0% Internet access 100.0%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 94963
What city is ZIP code 94963 in?
ZIP code 94963 is primarily assigned to San Geronimo, California.
What county is ZIP code 94963 in?
ZIP code 94963 falls within Marin County, California.
How educated is the population of ZIP code 94963?
86% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
Does ZIP code 94963 have a large retiree population?
58% of households in ZIP code 94963 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 94963 have an older population?
26% of residents in ZIP code 94963 are 65 or older, above the national average of ~17%.
Is ZIP code 94963 mostly owner-occupied?
90% of occupied units in ZIP code 94963 are owner-occupied, well above the national average.
What timezone is ZIP code 94963 in?
ZIP code 94963 observes the PST timezone.
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