Lancaster, California demographics

Lancaster, CA demographics: median age 34.5; 20.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Lancaster city, California · Incorporated city · GEOID 0640130. The survey estimates a population of 169,169 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Lancaster is 34.5 years, with a 90% margin of error of 0.8 years. There are 52,374 households (±1,164). 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	34.5 ±0.8	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 169,169
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	45,199 ±2,048	26.7% ±1.2 pp	22.0%	22.0%
18–34	40,591 ±1,881	24.0% ±1.1 pp	23.9%	22.8%
35–64	62,966 ±2,111	37.2% ±1.2 pp	38.5%	38.0%
65 and older	20,413 ±1,177	12.1% ±0.7 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 169,169
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	84,549 ±1,469	50.0% ±0.9 pp	49.9%	49.5%
Female	84,620 ±1,472	50.0% ±0.9 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: 169,169
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	50,753 ±2,414	30.0% ±1.4 pp	39.7%	61.0%
Black or African American alone	32,995 ±2,229	19.5% ±1.3 pp	5.4%	12.2%
American Indian and Alaska Native alone	2,611 ±792	1.5% ±0.5 pp	1.3%	0.9%
Asian alone	7,140 ±1,127	4.2% ±0.7 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	376 ±249 · low precision	0.2% ±0.1 pp · low precision	0.4%	0.2%
Some other race alone	33,509 ±2,471	19.8% ±1.5 pp	18.5%	7.1%
Two or more races	41,785 ±3,126	24.7% ±1.8 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 169,169
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	87,657 ±3,056	51.8% ±1.8 pp	59.8%	80.7%
Hispanic or Latino	81,512 ±3,059	48.2% ±1.8 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: 52,374
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	23,300 ±948	44.5% ±1.5 pp	48.4%	46.9%
Other family: male householder, no spouse present	4,295 ±621	8.2% ±1.2 pp	6.3%	5.1%
Other family: female householder, no spouse present	10,072 ±778	19.2% ±1.4 pp	13.1%	12.2%
Nonfamily: householder living alone	11,938 ±1,194	22.8% ±2.2 pp	24.3%	28.7%
Nonfamily: householder not living alone	2,769 ±432	5.3% ±0.8 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 52,374
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	20,034 ±733	38.3% ±1.1 pp	32.4%	29.5%
Households without people under 18	32,340 ±1,384	61.7% ±2.3 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 52,374
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	11,938 ±1,194	22.8% ±2.2 pp	24.3%	28.7%
Two-person households	13,044 ±1,008	24.9% ±1.8 pp	30.5%	33.8%
Three-person households	9,238 ±624	17.6% ±1.1 pp	16.7%	15.3%
Four-person households	7,615 ±749	14.5% ±1.4 pp	14.9%	12.6%
Five-person households	5,560 ±653	10.6% ±1.2 pp	7.7%	5.9%
Six-person households	2,363 ±476	4.5% ±0.9 pp	3.3%	2.2%
Seven or more people	2,616 ±416	5.0% ±0.8 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: 169,169
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	143,051 ±1,641	84.6% ±1.0 pp	73.0%	85.9%
Foreign born	26,118 ±1,642	15.4% ±1.0 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 159,100
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	103,690 ±3,048	65.2% ±1.9 pp	55.6%	77.7%
Spanish	47,507 ±2,951	29.9% ±1.8 pp	28.3%	13.6%
French, Haitian, or Cajun	180 ±115 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.7%
German or other West Germanic	287 ±167 · low precision	0.2% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	76 ±61 · low precision	0.0% ±0.0 pp · low precision	0.7%	0.7%
Other Indo-European	1,039 ±359	0.7% ±0.2 pp	3.5%	2.0%
Korean	206 ±109 · low precision	0.1% ±0.1 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	768 ±361	0.5% ±0.2 pp	3.5%	1.1%
Vietnamese	256 ±161 · low precision	0.2% ±0.1 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	2,378 ±580	1.5% ±0.4 pp	2.1%	0.6%
Other Asian and Pacific Island	1,157 ±492	0.7% ±0.3 pp	2.0%	1.1%
Arabic	948 ±415	0.6% ±0.3 pp	0.6%	0.5%
Other and unspecified	608 ±215	0.4% ±0.1 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: 107,503
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	19,951 ±1,409	18.6% ±1.3 pp	15.3%	10.4%
High school graduate or equivalency	31,253 ±2,033	29.1% ±1.8 pp	20.5%	26.0%
Some college, no degree	25,517 ±1,599	23.7% ±1.4 pp	19.3%	19.1%
Associate’s degree	9,309 ±903	8.7% ±0.8 pp	7.9%	8.8%
Bachelor’s degree	12,967 ±1,104	12.1% ±1.0 pp	22.7%	21.6%
Graduate or professional degree	8,506 ±893	7.9% ±0.8 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: 166,705
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	153,020 ±1,594	91.8% ±0.9 pp	89.2%	87.7%
Moved within same county	9,555 ±1,302	5.7% ±0.8 pp	6.4%	6.3%
Moved from a different county in the same state	2,391 ±654	1.4% ±0.4 pp	2.6%	3.1%
Moved from a different state	1,031 ±327	0.6% ±0.2 pp	1.1%	2.3%
Moved from abroad	708 ±278	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

4.5% of Lancaster residents (±0.5 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 91.6% 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	Lancaster	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	4.5% ±0.5 pp	6.6%	8.4%	Lower
Households with a broadband subscription Households	91.6% ±1.0 pp	93.5%	91.0%	Lower
Veterans Civilian population age 18 and older	6.1% ±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 Lancaster . 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 Lancaster housing and cost context or return to the city profile.