Windsor, California demographics

Windsor, CA demographics: median age 42.7; 36.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Windsor town, California · Incorporated town · GEOID 0685922. The survey estimates a population of 26,081 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Windsor is 42.7 years, with a 90% margin of error of 1.5 years. There are 9,192 households (±342). 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	42.7 ±1.5	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 26,081
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	5,844 ±607	22.4% ±2.3 pp	22.0%	22.0%
18–34	4,863 ±525	18.6% ±2.0 pp	23.9%	22.8%
35–64	10,814 ±713	41.5% ±2.7 pp	38.5%	38.0%
65 and older	4,560 ±413	17.5% ±1.6 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 26,081
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	12,884 ±493	49.4% ±1.9 pp	49.9%	49.5%
Female	13,197 ±492	50.6% ±1.9 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: 26,081
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	16,240 ±1,043	62.3% ±4.0 pp	39.7%	61.0%
Black or African American alone	389 ±253 · low precision	1.5% ±1.0 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	1,047 ±482	4.0% ±1.8 pp	1.3%	0.9%
Asian alone	496 ±182	1.9% ±0.7 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	15 ±26 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.2%
Some other race alone	3,591 ±990	13.8% ±3.8 pp	18.5%	7.1%
Two or more races	4,303 ±659	16.5% ±2.5 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 26,081
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	17,493 ±1,036	67.1% ±4.0 pp	59.8%	80.7%
Hispanic or Latino	8,588 ±1,040	32.9% ±4.0 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: 9,192
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	5,346 ±357	58.2% ±3.2 pp	48.4%	46.9%
Other family: male householder, no spouse present	484 ±171	5.3% ±1.8 pp	6.3%	5.1%
Other family: female householder, no spouse present	936 ±233	10.2% ±2.5 pp	13.1%	12.2%
Nonfamily: householder living alone	1,948 ±321	21.2% ±3.4 pp	24.3%	28.7%
Nonfamily: householder not living alone	478 ±119	5.2% ±1.3 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 9,192
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	3,108 ±304	33.8% ±3.1 pp	32.4%	29.5%
Households without people under 18	6,084 ±525	66.2% ±5.2 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 9,192
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	1,948 ±321	21.2% ±3.4 pp	24.3%	28.7%
Two-person households	2,872 ±357	31.2% ±3.7 pp	30.5%	33.8%
Three-person households	1,571 ±240	17.1% ±2.5 pp	16.7%	15.3%
Four-person households	1,692 ±252	18.4% ±2.7 pp	14.9%	12.6%
Five-person households	718 ±198	7.8% ±2.1 pp	7.7%	5.9%
Six-person households	264 ±110	2.9% ±1.2 pp	3.3%	2.2%
Seven or more people	127 ±72 · low precision	1.4% ±0.8 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: 26,081
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	22,367 ±615	85.8% ±2.4 pp	73.0%	85.9%
Foreign born	3,714 ±621	14.2% ±2.4 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 25,017
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	17,773 ±1,094	71.0% ±4.3 pp	55.6%	77.7%
Spanish	6,416 ±1,071	25.6% ±4.3 pp	28.3%	13.6%
French, Haitian, or Cajun	129 ±132 · low precision	0.5% ±0.5 pp · low precision	0.4%	0.7%
German or other West Germanic	60 ±46 · low precision	0.2% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	28 ±30 · low precision	0.1% ±0.1 pp · low precision	0.7%	0.7%
Other Indo-European	83 ±48 · low precision	0.3% ±0.2 pp · low precision	3.5%	2.0%
Korean	31 ±46 · low precision	0.1% ±0.2 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	58 ±52 · low precision	0.2% ±0.2 pp · low precision	3.5%	1.1%
Vietnamese	102 ±96 · low precision	0.4% ±0.4 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	18 ±22 · low precision	0.1% ±0.1 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	90 ±65 · low precision	0.4% ±0.3 pp · low precision	2.0%	1.1%
Arabic	40 ±57 · low precision	0.2% ±0.2 pp · low precision	0.6%	0.5%
Other and unspecified	189 ±136 · low precision	0.8% ±0.5 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: 17,943
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	2,228 ±426	12.4% ±2.3 pp	15.3%	10.4%
High school graduate or equivalency	3,637 ±459	20.3% ±2.5 pp	20.5%	26.0%
Some college, no degree	4,072 ±466	22.7% ±2.5 pp	19.3%	19.1%
Associate’s degree	1,497 ±234	8.3% ±1.3 pp	7.9%	8.8%
Bachelor’s degree	4,323 ±466	24.1% ±2.5 pp	22.7%	21.6%
Graduate or professional degree	2,186 ±296	12.2% ±1.6 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: 25,924
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	23,637 ±624	91.2% ±2.4 pp	89.2%	87.7%
Moved within same county	1,566 ±535	6.0% ±2.1 pp	6.4%	6.3%
Moved from a different county in the same state	495 ±168	1.9% ±0.6 pp	2.6%	3.1%
Moved from a different state	208 ±181 · low precision	0.8% ±0.7 pp · low precision	1.1%	2.3%
Moved from abroad	18 ±27 · low precision	0.1% ±0.1 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

4.9% of Windsor residents (±1.8 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 94.3% 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	Windsor	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	4.9% ±1.8 pp	6.6%	8.4%	Not statistically different
Households with a broadband subscription Households	94.3% ±1.6 pp	93.5%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	5.5% ±0.9 pp	4.3%	6.2%	Higher

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