Lomita, California demographics

Lomita, CA demographics: median age 39.5; 36.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Lomita city, California · Incorporated city · GEOID 0642468. The survey estimates a population of 20,225 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Lomita is 39.5 years, with a 90% margin of error of 3.2 years. There are 7,326 households (±315). 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	39.5 ±3.2	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 20,225
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	4,189 ±599	20.7% ±3.0 pp	22.0%	22.0%
18–34	4,475 ±603	22.1% ±3.0 pp	23.9%	22.8%
35–64	7,893 ±697	39.0% ±3.4 pp	38.5%	38.0%
65 and older	3,668 ±428	18.1% ±2.1 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 20,225
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	9,762 ±528	48.3% ±2.6 pp	49.9%	49.5%
Female	10,463 ±529	51.7% ±2.6 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: 20,225
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	8,574 ±1,021	42.4% ±5.0 pp	39.7%	61.0%
Black or African American alone	880 ±358	4.4% ±1.8 pp	5.4%	12.2%
American Indian and Alaska Native alone	191 ±114 · low precision	0.9% ±0.6 pp · low precision	1.3%	0.9%
Asian alone	3,562 ±757	17.6% ±3.7 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	62 ±73 · low precision	0.3% ±0.4 pp · low precision	0.4%	0.2%
Some other race alone	3,551 ±824	17.6% ±4.1 pp	18.5%	7.1%
Two or more races	3,405 ±701	16.8% ±3.5 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 20,225
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	13,259 ±1,035	65.6% ±5.1 pp	59.8%	80.7%
Hispanic or Latino	6,966 ±1,036	34.4% ±5.1 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: 7,326
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	3,533 ±330	48.2% ±4.0 pp	48.4%	46.9%
Other family: male householder, no spouse present	505 ±154	6.9% ±2.1 pp	6.3%	5.1%
Other family: female householder, no spouse present	936 ±249	12.8% ±3.4 pp	13.1%	12.2%
Nonfamily: householder living alone	1,806 ±320	24.7% ±4.2 pp	24.3%	28.7%
Nonfamily: householder not living alone	546 ±147	7.5% ±2.0 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 7,326
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	2,065 ±200	28.2% ±2.4 pp	32.4%	29.5%
Households without people under 18	5,261 ±415	71.8% ±4.7 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 7,326
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	1,806 ±320	24.7% ±4.2 pp	24.3%	28.7%
Two-person households	2,357 ±360	32.2% ±4.7 pp	30.5%	33.8%
Three-person households	1,179 ±245	16.1% ±3.3 pp	16.7%	15.3%
Four-person households	1,073 ±291	14.6% ±3.9 pp	14.9%	12.6%
Five-person households	719 ±194	9.8% ±2.6 pp	7.7%	5.9%
Six-person households	136 ±66	1.9% ±0.9 pp	3.3%	2.2%
Seven or more people	56 ±56 · low precision	0.8% ±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: 20,225
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	14,179 ±731	70.1% ±3.6 pp	73.0%	85.9%
Foreign born	6,046 ±732	29.9% ±3.6 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 19,093
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	11,612 ±770	60.8% ±3.9 pp	55.6%	77.7%
Spanish	4,085 ±870	21.4% ±4.5 pp	28.3%	13.6%
French, Haitian, or Cajun	87 ±100 · low precision	0.5% ±0.5 pp · low precision	0.4%	0.7%
German or other West Germanic	15 ±22 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	238 ±315 · low precision	1.2% ±1.6 pp · low precision	0.7%	0.7%
Other Indo-European	448 ±233 · low precision	2.3% ±1.2 pp · low precision	3.5%	2.0%
Korean	333 ±157	1.7% ±0.8 pp	1.0%	0.3%
Chinese, including Mandarin and Cantonese	416 ±254 · low precision	2.2% ±1.3 pp · low precision	3.5%	1.1%
Vietnamese	106 ±114 · low precision	0.6% ±0.6 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	541 ±263	2.8% ±1.4 pp	2.1%	0.6%
Other Asian and Pacific Island	795 ±326	4.2% ±1.7 pp	2.0%	1.1%
Arabic	176 ±159 · low precision	0.9% ±0.8 pp · low precision	0.6%	0.5%
Other and unspecified	241 ±200 · low precision	1.3% ±1.0 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: 14,199
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	1,960 ±547	13.8% ±3.8 pp	15.3%	10.4%
High school graduate or equivalency	2,752 ±474	19.4% ±3.2 pp	20.5%	26.0%
Some college, no degree	3,027 ±454	21.3% ±3.1 pp	19.3%	19.1%
Associate’s degree	1,352 ±303	9.5% ±2.1 pp	7.9%	8.8%
Bachelor’s degree	3,379 ±456	23.8% ±3.0 pp	22.7%	21.6%
Graduate or professional degree	1,729 ±326	12.2% ±2.2 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: 20,004
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	18,405 ±426	92.0% ±2.1 pp	89.2%	87.7%
Moved within same county	1,336 ±358	6.7% ±1.8 pp	6.4%	6.3%
Moved from a different county in the same state	186 ±118 · low precision	0.9% ±0.6 pp · low precision	2.6%	3.1%
Moved from a different state	58 ±58 · low precision	0.3% ±0.3 pp · low precision	1.1%	2.3%
Moved from abroad	19 ±21 · 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

7.3% of Lomita residents (±2.6 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 93.3% 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	Lomita	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	7.3% ±2.6 pp	6.6%	8.4%	Not statistically different
Households with a broadband subscription Households	93.3% ±2.7 pp	93.5%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.0% ±1.2 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 Lomita . 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 Lomita housing and cost context or return to the city profile.