Colma, California demographics

Colma, CA demographics: median age 38.1; 26.7% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Colma town, California · Incorporated town · GEOID 0614736. The survey estimates a population of 1,636 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Colma is 38.1 years, with a 90% margin of error of 4.8 years. There are 471 households (±81). 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	38.1 ±4.8	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 1,636
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	370 ±101	22.6% ±4.2 pp	22.0%	22.0%
18–34	312 ±92	19.1% ±4.1 pp	23.9%	22.8%
35–64	700 ±125	42.8% ±11.5 pp	38.5%	38.0%
65 and older	254 ±68	15.5% ±2.8 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 1,636
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	870 ±185	53.2% ±3.7 pp	49.9%	49.5%
Female	766 ±177	46.8% ±5.3 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: 1,636
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	437 ±158	26.7% ±8.0 pp	39.7%	61.0%
Black or African American alone	26 ±31 · low precision	1.6% ±1.9 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	222 ±172 · low precision	13.6% ±10.2 pp · low precision	1.3%	0.9%
Asian alone	421 ±152	25.7% ±7.7 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±14 · low precision	0.0% ±0.9 pp · low precision	0.4%	0.2%
Some other race alone	166 ±100 · low precision	10.1% ±5.8 pp · low precision	18.5%	7.1%
Two or more races	364 ±150	22.2% ±8.0 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 1,636
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	759 ±214	46.4% ±9.2 pp	59.8%	80.7%
Hispanic or Latino	877 ±322	53.6% ±16.5 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: 471
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	252 ±66	53.5% ±10.6 pp	48.4%	46.9%
Other family: male householder, no spouse present	23 ±19 · low precision	4.9% ±3.9 pp · low precision	6.3%	5.1%
Other family: female householder, no spouse present	77 ±31	16.3% ±6.0 pp	13.1%	12.2%
Nonfamily: householder living alone	77 ±37	16.3% ±7.3 pp	24.3%	28.7%
Nonfamily: householder not living alone	42 ±32 · low precision	8.9% ±6.6 pp · low precision	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 471
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	171 ±55	36.3% ±9.9 pp	32.4%	29.5%
Households without people under 18	300 ±76	63.7% ±11.8 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 471
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	77 ±37	16.3% ±7.3 pp	24.3%	28.7%
Two-person households	117 ±47	24.8% ±9.0 pp	30.5%	33.8%
Three-person households	113 ±50	24.0% ±9.8 pp	16.7%	15.3%
Four-person households	75 ±42 · low precision	15.9% ±8.6 pp · low precision	14.9%	12.6%
Five-person households	49 ±26 · low precision	10.4% ±5.1 pp	7.7%	5.9%
Six-person households	10 ±18 · low precision	2.1% ±3.9 pp · low precision	3.3%	2.2%
Seven or more people	30 ±30 · low precision	6.4% ±6.2 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: 1,636
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	1,093 ±246	66.8% ±6.8 pp	73.0%	85.9%
Foreign born	543 ±180	33.2% ±8.7 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 1,568
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	732 ±171	46.7% ±5.4 pp	55.6%	77.7%
Spanish	482 ±193	30.7% ±10.6 pp	28.3%	13.6%
French, Haitian, or Cajun	0 ±14 · low precision	0.0% ±0.9 pp · low precision	0.4%	0.7%
German or other West Germanic	0 ±14 · low precision	0.0% ±0.9 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±14 · low precision	0.0% ±0.9 pp · low precision	0.7%	0.7%
Other Indo-European	22 ±19 · low precision	1.4% ±1.2 pp · low precision	3.5%	2.0%
Korean	0 ±14 · low precision	0.0% ±0.9 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	85 ±56 · low precision	5.4% ±3.4 pp · low precision	3.5%	1.1%
Vietnamese	0 ±14 · low precision	0.0% ±0.9 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	194 ±110 · low precision	12.4% ±6.6 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	9 ±12 · low precision	0.6% ±0.8 pp · low precision	2.0%	1.1%
Arabic	44 ±45 · low precision	2.8% ±2.8 pp · low precision	0.6%	0.5%
Other and unspecified	0 ±14 · low precision	0.0% ±0.9 pp · low precision	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: 1,170
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	149 ±81 · low precision	12.7% ±6.4 pp · low precision	15.3%	10.4%
High school graduate or equivalency	283 ±98	24.2% ±6.9 pp	20.5%	26.0%
Some college, no degree	329 ±102	28.1% ±6.6 pp	19.3%	19.1%
Associate’s degree	97 ±36	8.3% ±2.6 pp	7.9%	8.8%
Bachelor’s degree	243 ±73	20.8% ±4.7 pp	22.7%	21.6%
Graduate or professional degree	69 ±39 · low precision	5.9% ±3.1 pp · low precision	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: 1,620
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	1,528 ±310	94.3% ±27.1 pp	89.2%	87.7%
Moved within same county	39 ±36 · low precision	2.4% ±2.2 pp · low precision	6.4%	6.3%
Moved from a different county in the same state	50 ±46 · low precision	3.1% ±2.8 pp · low precision	2.6%	3.1%
Moved from a different state	0 ±14 · low precision	0.0% ±0.9 pp · low precision	1.1%	2.3%
Moved from abroad	3 ±4 · low precision	0.2% ±0.2 pp · low precision	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

6.6% of Colma residents (±3.8 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 91.3% 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	Colma	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	6.6% ±3.8 pp · low precision	6.6%	8.4%	Not statistically different
Households with a broadband subscription Households	91.3% ±0.6 pp	93.5%	91.0%	Lower
Veterans Civilian population age 18 and older	2.9% ±1.5 pp · low precision	4.3%	6.2%	Not statistically different

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 Colma . 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 Colma housing and cost context or return to the city profile.