Los Alamitos, California demographics

Los Alamitos, CA demographics: median age 37.2; 44.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Los Alamitos city, California · Incorporated city · GEOID 0643224. The survey estimates a population of 11,794 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Los Alamitos is 37.2 years, with a 90% margin of error of 2.3 years. There are 4,414 households (±238). 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	37.2 ±2.3	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 11,794
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	2,878 ±408	24.4% ±3.5 pp	22.0%	22.0%
18–34	2,702 ±372	22.9% ±3.1 pp	23.9%	22.8%
35–64	4,595 ±521	39.0% ±4.4 pp	38.5%	38.0%
65 and older	1,619 ±235	13.7% ±2.0 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 11,794
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	5,432 ±416	46.1% ±3.5 pp	49.9%	49.5%
Female	6,362 ±413	53.9% ±3.5 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: 11,794
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	5,643 ±639	47.8% ±5.4 pp	39.7%	61.0%
Black or African American alone	325 ±173 · low precision	2.8% ±1.5 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	78 ±99 · low precision	0.7% ±0.8 pp · low precision	1.3%	0.9%
Asian alone	2,050 ±399	17.4% ±3.4 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	30 ±46 · low precision	0.3% ±0.4 pp · low precision	0.4%	0.2%
Some other race alone	1,634 ±716	13.9% ±6.1 pp	18.5%	7.1%
Two or more races	2,034 ±422	17.2% ±3.6 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 11,794
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	8,100 ±641	68.7% ±5.4 pp	59.8%	80.7%
Hispanic or Latino	3,694 ±632	31.3% ±5.4 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: 4,414
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	1,915 ±183	43.4% ±3.4 pp	48.4%	46.9%
Other family: male householder, no spouse present	266 ±123	6.0% ±2.8 pp	6.3%	5.1%
Other family: female householder, no spouse present	900 ±221	20.4% ±4.9 pp	13.1%	12.2%
Nonfamily: householder living alone	1,083 ±221	24.5% ±4.8 pp	24.3%	28.7%
Nonfamily: householder not living alone	250 ±95	5.7% ±2.1 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 4,414
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	1,611 ±154	36.5% ±2.9 pp	32.4%	29.5%
Households without people under 18	2,803 ±329	63.5% ±6.6 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 4,414
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	1,083 ±221	24.5% ±4.8 pp	24.3%	28.7%
Two-person households	1,370 ±221	31.0% ±4.7 pp	30.5%	33.8%
Three-person households	867 ±181	19.6% ±4.0 pp	16.7%	15.3%
Four-person households	788 ±164	17.9% ±3.6 pp	14.9%	12.6%
Five-person households	219 ±151 · low precision	5.0% ±3.4 pp · low precision	7.7%	5.9%
Six-person households	66 ±51 · low precision	1.5% ±1.2 pp · low precision	3.3%	2.2%
Seven or more people	21 ±38 · low precision	0.5% ±0.9 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: 11,794
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	10,049 ±307	85.2% ±2.6 pp	73.0%	85.9%
Foreign born	1,745 ±305	14.8% ±2.6 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 11,041
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	7,724 ±571	70.0% ±5.0 pp	55.6%	77.7%
Spanish	1,691 ±536	15.3% ±4.8 pp	28.3%	13.6%
French, Haitian, or Cajun	65 ±48 · low precision	0.6% ±0.4 pp · low precision	0.4%	0.7%
German or other West Germanic	188 ±218 · low precision	1.7% ±2.0 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	90 ±80 · low precision	0.8% ±0.7 pp · low precision	0.7%	0.7%
Other Indo-European	276 ±182 · low precision	2.5% ±1.6 pp · low precision	3.5%	2.0%
Korean	145 ±82 · low precision	1.3% ±0.7 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	264 ±186 · low precision	2.4% ±1.7 pp · low precision	3.5%	1.1%
Vietnamese	76 ±52 · low precision	0.7% ±0.5 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	113 ±75 · low precision	1.0% ±0.7 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	329 ±212 · low precision	3.0% ±1.9 pp · low precision	2.0%	1.1%
Arabic	28 ±30 · low precision	0.3% ±0.3 pp · low precision	0.6%	0.5%
Other and unspecified	52 ±76 · low precision	0.5% ±0.7 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: 8,087
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	397 ±159	4.9% ±2.0 pp	15.3%	10.4%
High school graduate or equivalency	1,499 ±292	18.5% ±3.5 pp	20.5%	26.0%
Some college, no degree	1,793 ±317	22.2% ±3.8 pp	19.3%	19.1%
Associate’s degree	817 ±202	10.1% ±2.5 pp	7.9%	8.8%
Bachelor’s degree	2,535 ±391	31.3% ±4.6 pp	22.7%	21.6%
Graduate or professional degree	1,046 ±193	12.9% ±2.3 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: 11,618
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	10,250 ±385	88.2% ±3.2 pp	89.2%	87.7%
Moved within same county	668 ±263	5.7% ±2.3 pp	6.4%	6.3%
Moved from a different county in the same state	644 ±298	5.5% ±2.6 pp	2.6%	3.1%
Moved from a different state	2 ±15 · low precision	0.0% ±0.1 pp · low precision	1.1%	2.3%
Moved from abroad	54 ±74 · low precision	0.5% ±0.6 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

9.8% of Los Alamitos residents (±3.7 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 94.2% 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	Los Alamitos	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	9.8% ±3.7 pp	6.6%	8.4%	Not statistically different
Households with a broadband subscription Households	94.2% ±1.6 pp	93.5%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.2% ±1.3 pp	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 Los Alamitos . 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 Los Alamitos housing and cost context or return to the city profile.