Ontario, Oregon demographics

Ontario, OR demographics: median age 35.2; 15.7% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Ontario city, Oregon · Incorporated city · GEOID 4154900. The survey estimates a population of 11,842 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Ontario is 35.2 years, with a 90% margin of error of 2.2 years. There are 4,575 households (±235). 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	35.2 ±2.2	40.4 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 11,842
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Under 18	2,915 ±336	24.6% ±2.8 pp	19.9%	22.0%
18–34	2,957 ±352	25.0% ±3.0 pp	22.5%	22.8%
35–64	3,822 ±381	32.3% ±3.2 pp	38.5%	38.0%
65 and older	2,148 ±266	18.1% ±2.2 pp	19.1%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 11,842
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Male	5,596 ±238	47.3% ±2.0 pp	49.9%	49.5%
Female	6,246 ±235	52.7% ±2.0 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: 11,842
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
White alone	7,424 ±735	62.7% ±6.2 pp	74.6%	61.0%
Black or African American alone	86 ±78 · low precision	0.7% ±0.7 pp · low precision	1.9%	12.2%
American Indian and Alaska Native alone	309 ±263 · low precision	2.6% ±2.2 pp · low precision	1.1%	0.9%
Asian alone	234 ±102	2.0% ±0.9 pp	4.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.4%	0.2%
Some other race alone	963 ±459	8.1% ±3.9 pp	5.2%	7.1%
Two or more races	2,826 ±689	23.9% ±5.8 pp	12.3%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 11,842
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Not Hispanic or Latino	6,464 ±457	54.6% ±3.9 pp	85.3%	80.7%
Hispanic or Latino	5,378 ±450	45.4% ±3.8 pp	14.7%	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: 4,575
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Married-couple family	1,573 ±218	34.4% ±4.4 pp	46.7%	46.9%
Other family: male householder, no spouse present	217 ±110 · low precision	4.7% ±2.4 pp · low precision	4.9%	5.1%
Other family: female householder, no spouse present	918 ±207	20.1% ±4.4 pp	10.1%	12.2%
Nonfamily: householder living alone	1,437 ±260	31.4% ±5.4 pp	28.4%	28.7%
Nonfamily: householder not living alone	430 ±147	9.4% ±3.2 pp	9.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 4,575
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Households with people under 18	1,414 ±191	30.9% ±3.9 pp	27.2%	29.5%
Households without people under 18	3,161 ±283	69.1% ±5.1 pp	72.8%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 4,575
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
One-person nonfamily households	1,437 ±260	31.4% ±5.4 pp	28.4%	28.7%
Two-person households	1,533 ±283	33.5% ±5.9 pp	36.7%	33.8%
Three-person households	499 ±153	10.9% ±3.3 pp	15.0%	15.3%
Four-person households	655 ±211	14.3% ±4.5 pp	11.8%	12.6%
Five-person households	286 ±112	6.3% ±2.4 pp	5.0%	5.9%
Six-person households	66 ±58 · low precision	1.4% ±1.3 pp · low precision	1.9%	2.2%
Seven or more people	99 ±72 · low precision	2.2% ±1.6 pp · low precision	1.2%	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: 11,842
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Native	10,931 ±255	92.3% ±2.1 pp	90.2%	85.9%
Foreign born	911 ±247	7.7% ±2.1 pp	9.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 11,070
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
English only	8,124 ±510	73.4% ±4.5 pp	84.8%	77.7%
Spanish	2,845 ±499	25.7% ±4.5 pp	9.0%	13.6%
French, Haitian, or Cajun	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.3%	0.7%
German or other West Germanic	34 ±33 · low precision	0.3% ±0.3 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.8%	0.7%
Other Indo-European	26 ±69 · low precision	0.2% ±0.6 pp · low precision	1.0%	2.0%
Korean	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.8%	1.1%
Vietnamese	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.6%	0.5%
Tagalog, including Filipino	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	33 ±34 · low precision	0.3% ±0.3 pp · low precision	1.1%	1.1%
Arabic	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.2%	0.5%
Other and unspecified	8 ±14 · low precision	0.1% ±0.1 pp · low precision	0.5%	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: 7,563
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Less than high school graduate	1,356 ±300	17.9% ±3.9 pp	8.2%	10.4%
High school graduate or equivalency	2,300 ±340	30.4% ±4.4 pp	22.4%	26.0%
Some college, no degree	1,836 ±305	24.3% ±3.9 pp	23.5%	19.1%
Associate’s degree	886 ±199	11.7% ±2.6 pp	9.1%	8.8%
Bachelor’s degree	840 ±193	11.1% ±2.5 pp	22.7%	21.6%
Graduate or professional degree	345 ±111	4.6% ±1.5 pp	14.1%	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: 11,771
Category	Count ± MOE	Share ± MOE (pp)	Oregon	U.S.
Same house	10,194 ±514	86.6% ±4.3 pp	86.0%	87.7%
Moved within same county	321 ±186 · low precision	2.7% ±1.6 pp · low precision	7.0%	6.3%
Moved from a different county in the same state	295 ±230 · low precision	2.5% ±2.0 pp · low precision	3.4%	3.1%
Moved from a different state	961 ±370	8.2% ±3.1 pp	3.0%	2.3%
Moved from abroad	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.5%	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

8.9% of Ontario residents (±2.3 percentage points) had no health insurance coverage when surveyed, compared with 5.9% in Oregon and 8.4% nationally. 88.8% 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	Ontario	Oregon	U.S.	Compared with Oregon
People without health insurance Civilian noninstitutionalized population	8.9% ±2.3 pp	5.9%	8.4%	Higher
Households with a broadband subscription Households	88.8% ±2.8 pp	92.4%	91.0%	Lower
Veterans Civilian population age 18 and older	6.9% ±1.6 pp	7.2%	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 Ontario . 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 Ontario housing and cost context or return to the city profile.