Oceanside, California demographics

Oceanside, CA demographics: median age 38.9; 36.2% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Oceanside city, California · Incorporated city · GEOID 0653322. The survey estimates a population of 172,242 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Oceanside is 38.9 years, with a 90% margin of error of 0.6 years. There are 61,947 households (±1,012). 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	38.9 ±0.6	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 172,242
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	34,802 ±1,628	20.2% ±0.9 pp	22.0%	22.0%
18–34	42,091 ±1,708	24.4% ±1.0 pp	23.9%	22.8%
35–64	66,130 ±1,915	38.4% ±1.1 pp	38.5%	38.0%
65 and older	29,219 ±1,163	17.0% ±0.7 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 172,242
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	86,827 ±1,259	50.4% ±0.7 pp	49.9%	49.5%
Female	85,415 ±1,262	49.6% ±0.7 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: 172,242
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	81,563 ±2,398	47.4% ±1.4 pp	39.7%	61.0%
Black or African American alone	7,890 ±1,151	4.6% ±0.7 pp	5.4%	12.2%
American Indian and Alaska Native alone	2,136 ±895	1.2% ±0.5 pp	1.3%	0.9%
Asian alone	14,531 ±1,183	8.4% ±0.7 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	986 ±367	0.6% ±0.2 pp	0.4%	0.2%
Some other race alone	19,249 ±1,739	11.2% ±1.0 pp	18.5%	7.1%
Two or more races	45,887 ±2,572	26.6% ±1.5 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 172,242
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	107,665 ±2,348	62.5% ±1.4 pp	59.8%	80.7%
Hispanic or Latino	64,577 ±2,339	37.5% ±1.4 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: 61,947
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	31,380 ±978	50.7% ±1.3 pp	48.4%	46.9%
Other family: male householder, no spouse present	3,606 ±493	5.8% ±0.8 pp	6.3%	5.1%
Other family: female householder, no spouse present	6,723 ±650	10.9% ±1.0 pp	13.1%	12.2%
Nonfamily: householder living alone	14,501 ±969	23.4% ±1.5 pp	24.3%	28.7%
Nonfamily: householder not living alone	5,737 ±558	9.3% ±0.9 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 61,947
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	17,654 ±751	28.5% ±1.1 pp	32.4%	29.5%
Households without people under 18	44,293 ±1,297	71.5% ±1.7 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 61,947
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	14,501 ±969	23.4% ±1.5 pp	24.3%	28.7%
Two-person households	21,609 ±1,133	34.9% ±1.7 pp	30.5%	33.8%
Three-person households	10,471 ±767	16.9% ±1.2 pp	16.7%	15.3%
Four-person households	8,072 ±774	13.0% ±1.2 pp	14.9%	12.6%
Five-person households	4,048 ±485	6.5% ±0.8 pp	7.7%	5.9%
Six-person households	1,911 ±378	3.1% ±0.6 pp	3.3%	2.2%
Seven or more people	1,335 ±240	2.2% ±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: 172,242
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	134,839 ±1,726	78.3% ±1.0 pp	73.0%	85.9%
Foreign born	37,403 ±1,737	21.7% ±1.0 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 162,641
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	107,009 ±2,243	65.8% ±1.3 pp	55.6%	77.7%
Spanish	41,195 ±2,274	25.3% ±1.4 pp	28.3%	13.6%
French, Haitian, or Cajun	507 ±203	0.3% ±0.1 pp	0.4%	0.7%
German or other West Germanic	840 ±269	0.5% ±0.2 pp	0.3%	0.5%
Russian, Polish, or other Slavic	1,177 ±398	0.7% ±0.2 pp	0.7%	0.7%
Other Indo-European	2,051 ±473	1.3% ±0.3 pp	3.5%	2.0%
Korean	397 ±180	0.2% ±0.1 pp	1.0%	0.3%
Chinese, including Mandarin and Cantonese	1,376 ±547	0.8% ±0.3 pp	3.5%	1.1%
Vietnamese	1,699 ±423	1.0% ±0.3 pp	1.5%	0.5%
Tagalog, including Filipino	3,429 ±727	2.1% ±0.4 pp	2.1%	0.6%
Other Asian and Pacific Island	2,260 ±606	1.4% ±0.4 pp	2.0%	1.1%
Arabic	248 ±127 · low precision	0.2% ±0.1 pp · low precision	0.6%	0.5%
Other and unspecified	453 ±209	0.3% ±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: 122,532
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	16,296 ±1,278	13.3% ±1.0 pp	15.3%	10.4%
High school graduate or equivalency	23,536 ±1,326	19.2% ±1.1 pp	20.5%	26.0%
Some college, no degree	28,381 ±1,323	23.2% ±1.0 pp	19.3%	19.1%
Associate’s degree	10,018 ±808	8.2% ±0.7 pp	7.9%	8.8%
Bachelor’s degree	28,442 ±1,279	23.2% ±1.0 pp	22.7%	21.6%
Graduate or professional degree	15,859 ±1,041	12.9% ±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: 170,834
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	149,425 ±1,672	87.5% ±1.0 pp	89.2%	87.7%
Moved within same county	13,373 ±1,265	7.8% ±0.7 pp	6.4%	6.3%
Moved from a different county in the same state	3,526 ±722	2.1% ±0.4 pp	2.6%	3.1%
Moved from a different state	3,785 ±756	2.2% ±0.4 pp	1.1%	2.3%
Moved from abroad	725 ±246	0.4% ±0.1 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

8.3% of Oceanside residents (±0.8 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 95.4% 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	Oceanside	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	8.3% ±0.8 pp	6.6%	8.4%	Higher
Households with a broadband subscription Households	95.4% ±0.5 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	8.8% ±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 Oceanside . 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 Oceanside housing and cost context or return to the city profile.