Demographics of Ontario city, California

Ontario city, California had 187,013 people on July 1, 2025, by the Census Bureau’s estimate: +11,314 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Ontario city, in four figures

187,013
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 180,547 ±75.; +6.4%
Change since July 2020: +11,314 people.; 33.5 ±0.7
Median age: ACS 2020–⁠2024.; $88,941 ±$4,081
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Ontario city, California's population grew 6.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Ontario city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Ontario city, California's population grew 6.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Ontario city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	175,699	100.0	100.0
2021	178,221	101.4	100.2
2022	180,892	103.0	100.7
2023	183,328	104.3	101.6
2024	185,669	105.7	102.5
2025	187,013	106.4	103.1

Population of Ontario city, California on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	175,699	—
2021	178,221	+2,522
2022	180,892	+2,671
2023	183,328	+2,436
2024	185,669	+2,341
2025	187,013	+1,344

Age, 2020–2024

The median age is 33.5 ±0.7: for men 33.6 ±0.8 and for women 33.3 ±0.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Ontario city by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	11,557 ±901	6.4% ±0.5	5.5% ±<0.1	5.6% ±<0.1
5 to 17	32,560 ±1,552	18.0% ±0.9	16.5% ±<0.1	16.3% ±<0.1
18 to 24	18,564 ±1,228	10.3% ±0.7	9.1% ±<0.1	9.1% ±<0.1
25 to 44	57,216 ±1,982	31.7% ±1.1	28.7% ±<0.1	26.9% ±<0.1
45 to 64	41,780 ±1,625	23.1% ±0.9	24.6% ±<0.1	24.8% ±<0.1
65 and over	18,870 ±1,115	10.5% ±0.6	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $88,941 ±$4,081, and income per person $32,506 ±$941, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in Ontario city by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	6,359 ±704	11.8% ±1.3	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	7,677 ±786	14.3% ±1.4	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	8,604 ±797	16.0% ±1.5	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	7,151 ±655	13.3% ±1.2	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	11,591 ±785	21.6% ±1.4	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	6,507 ±734	12.1% ±1.3	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	5,881 ±585	10.9% ±1.1	20.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Ontario city by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	22,298 ±1,949	12.4% ±1.1	12.0% ±0.1	12.5% ±0.1
Under 18	7,292 ±960	16.8% ±2.1	15.0% ±0.1	16.1% ±0.1
18 to 59	11,661 ±1,246	10.8% ±1.1	11.0% ±0.1	11.6% ±0.1
60 and over	3,345 ±548	11.8% ±1.9	11.5% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Ontario city, ACS 2020–2024
Measure	Ontario city	California	United States
Housing units	55,966 ±979	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	96.1% ±0.7	92.5% ±0.1	89.9% ±0.1
Vacant	3.9% ±0.7	7.5% ±0.1	10.1% ±0.1
Owner occupied	58.0% ±1.9	55.9% ±0.3	65.2% ±0.3
Renter occupied	42.0% ±1.8	44.1% ±0.2	34.8% ±0.1
Median home value	$607,600 ±$7,033	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$2,030 ±$50	$2,036 ±$5	$1,413 ±$2
Median year built	1980 ±1	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Ontario city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	123,800 ±2,559	68.6% ±1.4	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	22,296 ±1,733	12.3% ±1.0	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	10,450 ±1,447	5.8% ±0.8	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	17,309 ±1,400	9.6% ±0.8	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	119 to 605	0.1% to 0.3%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	138 to 688	0.1% to 0.4%	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	759 ±304	0.4% ±0.2	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	5,158 ±1,209	2.9% ±0.7	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Ontario city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	115,959 ±2,242	64.2% ±1.2	56.5% ±0.1	57.3% ±<0.1
Born in another state	11,882 ±911	6.6% ±0.5	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	2,620 ±475	1.5% ±0.3	1.5% ±<0.1	1.7% ±<0.1
Born abroad	50,086 ±2,155	27.7% ±1.2	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	24,258 ±1,274	13.4% ±0.7	14.7% ±0.1	7.4% ±<0.1
Not citizens	25,828 ±1,956	14.3% ±1.1	12.3% ±0.1	6.8% ±<0.1

Ontario city among the places of California

24th of 661 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the California page.

Places of California near Ontario city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Fontana city	214,169 ±89
Moreno Valley city	211,666 ±83
Oxnard city	200,928 ±69
Huntington Beach city	195,240 ±107
Glendale city	190,748 ±51
Ontario city	180,547 ±75
Elk Grove city	179,155 ±117
Santa Rosa city	177,090 ±70
Rancho Cucamonga city	175,411 ±81
Oceanside city	172,242 ±131
Garden Grove city	170,964 ±82

Elsewhere on the site

Reported crime in Ontario city, California

Rankings this appears in

No. 100 Places in California by Hispanic or Latino share
No. 104 Places in California by poverty rate
No. 151 Places in California by foreign-born share
No. 205 Places in California by median rent
No. 212 Places by Hispanic or Latino share
No. 276 Places in California by median household income

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026