Thousand Oaks, California demographics

Thousand Oaks, CA demographics: median age 44.9; 51.4% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Thousand Oaks city, California · Incorporated city · GEOID 0678582. The survey estimates a population of 125,205 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Thousand Oaks is 44.9 years, with a 90% margin of error of 1.0 years. There are 46,546 households (±849). 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	44.9 ±1.0	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 125,205
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	24,424 ±1,167	19.5% ±0.9 pp	22.0%	22.0%
18–34	24,393 ±1,248	19.5% ±1.0 pp	23.9%	22.8%
35–64	50,460 ±1,695	40.3% ±1.4 pp	38.5%	38.0%
65 and older	25,928 ±1,238	20.7% ±1.0 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 125,205
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	61,962 ±958	49.5% ±0.8 pp	49.9%	49.5%
Female	63,243 ±965	50.5% ±0.8 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: 125,205
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	82,152 ±1,681	65.6% ±1.3 pp	39.7%	61.0%
Black or African American alone	2,316 ±513	1.8% ±0.4 pp	5.4%	12.2%
American Indian and Alaska Native alone	861 ±282	0.7% ±0.2 pp	1.3%	0.9%
Asian alone	11,013 ±945	8.8% ±0.8 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	91 ±95 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.2%
Some other race alone	7,238 ±1,053	5.8% ±0.8 pp	18.5%	7.1%
Two or more races	21,534 ±1,734	17.2% ±1.4 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 125,205
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	99,370 ±1,577	79.4% ±1.3 pp	59.8%	80.7%
Hispanic or Latino	25,835 ±1,572	20.6% ±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: 46,546
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	25,735 ±818	55.3% ±1.4 pp	48.4%	46.9%
Other family: male householder, no spouse present	2,004 ±471	4.3% ±1.0 pp	6.3%	5.1%
Other family: female householder, no spouse present	4,226 ±524	9.1% ±1.1 pp	13.1%	12.2%
Nonfamily: householder living alone	11,682 ±930	25.1% ±1.9 pp	24.3%	28.7%
Nonfamily: householder not living alone	2,899 ±453	6.2% ±1.0 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 46,546
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	13,188 ±510	28.3% ±1.0 pp	32.4%	29.5%
Households without people under 18	33,358 ±1,138	71.7% ±2.1 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 46,546
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	11,682 ±930	25.1% ±1.9 pp	24.3%	28.7%
Two-person households	15,712 ±956	33.8% ±2.0 pp	30.5%	33.8%
Three-person households	8,265 ±642	17.8% ±1.3 pp	16.7%	15.3%
Four-person households	7,084 ±548	15.2% ±1.1 pp	14.9%	12.6%
Five-person households	2,583 ±347	5.5% ±0.7 pp	7.7%	5.9%
Six-person households	824 ±186	1.8% ±0.4 pp	3.3%	2.2%
Seven or more people	396 ±171	0.9% ±0.4 pp	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: 125,205
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	101,638 ±1,401	81.2% ±1.1 pp	73.0%	85.9%
Foreign born	23,567 ±1,404	18.8% ±1.1 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 119,758
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	91,677 ±1,789	76.6% ±1.4 pp	55.6%	77.7%
Spanish	15,148 ±1,475	12.6% ±1.2 pp	28.3%	13.6%
French, Haitian, or Cajun	583 ±192	0.5% ±0.2 pp	0.4%	0.7%
German or other West Germanic	708 ±248	0.6% ±0.2 pp	0.3%	0.5%
Russian, Polish, or other Slavic	1,223 ±734 · low precision	1.0% ±0.6 pp · low precision	0.7%	0.7%
Other Indo-European	3,961 ±755	3.3% ±0.6 pp	3.5%	2.0%
Korean	483 ±184	0.4% ±0.2 pp	1.0%	0.3%
Chinese, including Mandarin and Cantonese	2,340 ±471	2.0% ±0.4 pp	3.5%	1.1%
Vietnamese	277 ±160 · low precision	0.2% ±0.1 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	701 ±256	0.6% ±0.2 pp	2.1%	0.6%
Other Asian and Pacific Island	1,401 ±371	1.2% ±0.3 pp	2.0%	1.1%
Arabic	736 ±373 · low precision	0.6% ±0.3 pp · low precision	0.6%	0.5%
Other and unspecified	520 ±201	0.4% ±0.2 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: 89,480
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	4,808 ±632	5.4% ±0.7 pp	15.3%	10.4%
High school graduate or equivalency	13,163 ±832	14.7% ±0.9 pp	20.5%	26.0%
Some college, no degree	16,245 ±1,093	18.2% ±1.2 pp	19.3%	19.1%
Associate’s degree	9,242 ±1,061	10.3% ±1.2 pp	7.9%	8.8%
Bachelor’s degree	26,683 ±1,090	29.8% ±1.2 pp	22.7%	21.6%
Graduate or professional degree	19,339 ±1,155	21.6% ±1.3 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: 124,423
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	112,930 ±1,183	90.8% ±0.9 pp	89.2%	87.7%
Moved within same county	5,746 ±984	4.6% ±0.8 pp	6.4%	6.3%
Moved from a different county in the same state	4,002 ±697	3.2% ±0.6 pp	2.6%	3.1%
Moved from a different state	1,196 ±465	1.0% ±0.4 pp	1.1%	2.3%
Moved from abroad	549 ±215	0.4% ±0.2 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

4.9% of Thousand Oaks residents (±0.7 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 94.1% 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	Thousand Oaks	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	4.9% ±0.7 pp	6.6%	8.4%	Lower
Households with a broadband subscription Households	94.1% ±0.2 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	5.1% ±0.6 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 Thousand Oaks . 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 Thousand Oaks housing and cost context or return to the city profile.