San Ramon, California demographics

San Ramon, CA demographics: median age 41.6; 71.6% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · San Ramon city, California · Incorporated city · GEOID 0668378. The survey estimates a population of 85,993 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in San Ramon is 41.6 years, with a 90% margin of error of 0.9 years. There are 30,103 households (±590). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	41.6 ±0.9	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 85,993
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	22,144 ±1,151	25.8% ±1.3 pp	22.0%	22.0%
18–34	12,948 ±970	15.1% ±1.1 pp	23.9%	22.8%
35–64	40,400 ±1,389	47.0% ±1.6 pp	38.5%	38.0%
65 and older	10,501 ±741	12.2% ±0.9 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 85,993
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	42,048 ±875	48.9% ±1.0 pp	49.9%	49.5%
Female	43,945 ±876	51.1% ±1.0 pp	50.1%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 85,993
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	30,014 ±1,844	34.9% ±2.1 pp	39.7%	61.0%
Black or African American alone	2,867 ±683	3.3% ±0.8 pp	5.4%	12.2%
American Indian and Alaska Native alone	263 ±119	0.3% ±0.1 pp	1.3%	0.9%
Asian alone	42,711 ±2,024	49.7% ±2.4 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	191 ±194 · low precision	0.2% ±0.2 pp · low precision	0.4%	0.2%
Some other race alone	2,111 ±613	2.5% ±0.7 pp	18.5%	7.1%
Two or more races	7,836 ±1,071	9.1% ±1.2 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 85,993
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	79,579 ±1,149	92.5% ±1.3 pp	59.8%	80.7%
Hispanic or Latino	6,414 ±1,145	7.5% ±1.3 pp	40.2%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 30,103
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	20,787 ±519	69.1% ±1.1 pp	48.4%	46.9%
Other family: male householder, no spouse present	894 ±265	3.0% ±0.9 pp	6.3%	5.1%
Other family: female householder, no spouse present	2,157 ±458	7.2% ±1.5 pp	13.1%	12.2%
Nonfamily: householder living alone	4,930 ±616	16.4% ±2.0 pp	24.3%	28.7%
Nonfamily: householder not living alone	1,335 ±370	4.4% ±1.2 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 30,103
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	13,181 ±584	43.8% ±1.7 pp	32.4%	29.5%
Households without people under 18	16,922 ±955	56.2% ±3.0 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 30,103
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	4,930 ±616	16.4% ±2.0 pp	24.3%	28.7%
Two-person households	8,758 ±716	29.1% ±2.3 pp	30.5%	33.8%
Three-person households	6,554 ±518	21.8% ±1.7 pp	16.7%	15.3%
Four-person households	7,452 ±599	24.8% ±1.9 pp	14.9%	12.6%
Five-person households	1,669 ±285	5.5% ±0.9 pp	7.7%	5.9%
Six-person households	520 ±204	1.7% ±0.7 pp	3.3%	2.2%
Seven or more people	220 ±131 · low precision	0.7% ±0.4 pp · low precision	2.6%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 85,993
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	52,840 ±1,554	61.4% ±1.8 pp	73.0%	85.9%
Foreign born	33,153 ±1,554	38.6% ±1.8 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 81,765
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	43,473 ±1,882	53.2% ±2.3 pp	55.6%	77.7%
Spanish	2,306 ±512	2.8% ±0.6 pp	28.3%	13.6%
French, Haitian, or Cajun	458 ±311 · low precision	0.6% ±0.4 pp · low precision	0.4%	0.7%
German or other West Germanic	125 ±79 · low precision	0.2% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	1,286 ±344	1.6% ±0.4 pp	0.7%	0.7%
Other Indo-European	10,884 ±1,222	13.3% ±1.5 pp	3.5%	2.0%
Korean	2,151 ±663	2.6% ±0.8 pp	1.0%	0.3%
Chinese, including Mandarin and Cantonese	9,163 ±1,398	11.2% ±1.7 pp	3.5%	1.1%
Vietnamese	633 ±225	0.8% ±0.3 pp	1.5%	0.5%
Tagalog, including Filipino	930 ±303	1.1% ±0.4 pp	2.1%	0.6%
Other Asian and Pacific Island	8,892 ±1,119	10.9% ±1.4 pp	2.0%	1.1%
Arabic	999 ±475	1.2% ±0.6 pp	0.6%	0.5%
Other and unspecified	465 ±228	0.6% ±0.3 pp	0.6%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 58,069
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	1,727 ±423	3.0% ±0.7 pp	15.3%	10.4%
High school graduate or equivalency	4,674 ±595	8.0% ±1.0 pp	20.5%	26.0%
Some college, no degree	6,151 ±741	10.6% ±1.3 pp	19.3%	19.1%
Associate’s degree	3,941 ±599	6.8% ±1.0 pp	7.9%	8.8%
Bachelor’s degree	22,192 ±981	38.2% ±1.6 pp	22.7%	21.6%
Graduate or professional degree	19,384 ±1,108	33.4% ±1.8 pp	14.4%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 85,251
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	75,873 ±1,225	89.0% ±1.4 pp	89.2%	87.7%
Moved within same county	2,761 ±751	3.2% ±0.9 pp	6.4%	6.3%
Moved from a different county in the same state	3,666 ±708	4.3% ±0.8 pp	2.6%	3.1%
Moved from a different state	1,191 ±409	1.4% ±0.5 pp	1.1%	2.3%
Moved from abroad	1,760 ±575	2.1% ±0.7 pp	0.7%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

1.9% of San Ramon residents (±0.6 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 97.1% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	San Ramon	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	1.9% ±0.6 pp	6.6%	8.4%	Lower
Households with a broadband subscription Households	97.1% ±0.8 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	3.3% ±0.5 pp	4.3%	6.2%	Lower

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for San Ramon . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read San Ramon housing and cost context or return to the city profile.