Population 182,843 · Census ACS 2020–24
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Population and households in Ontario
Household size in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.69 | 3.35 | 3.04 | 2.68 |
| 2010–14 | 3.70 | 3.43 | 3.10 | 2.73 |
| 2015–19 | 3.54 | 3.42 | 3.09 | 2.71 |
| 2020–24 | 3.43 | 3.34 | 3.01 | 2.65 |
| Change | −0.26 | −0.01 | −0.03 | −0.03 |
Ontario is a place of big households: 3.43 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Household size has dropped from 3.69 in 2006–10, a much bigger shift than nationally.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.2 | 33.6 | 35.8 | 37.7 |
| 2010–14 | 31.8 | 34.6 | 36.8 | 38.6 |
| 2015–19 | 33.1 | 35.9 | 37.9 | 39.6 |
| 2020–24 | 34.5 | 37.0 | 39.0 | 40.1 |
| Change | +3.3 | +3.4 | +3.1 | +2.3 |
Ontario is young: half of its residents are under 34.5, compared with a national median of 40.1. The population tilts toward young families with children. Since 2006–10, the median age has climbed from 31.2, as it has nationally.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.3% | 15.2% | 13.5% | 12.3% |
| 2010–14 | 17.9% | 15.7% | 13.5% | 12.3% |
| 2015–19 | 16.1% | 14.4% | 12.3% | 11.6% |
| 2020–24 | 16.8% | 14.8% | 12.3% | 11.6% |
| Change | +0.4 pts | −0.3 pts | −1.2 pts | −0.6 pts |
Single parents head about one in six households in Ontario (16.8%), well above the national share of 11.6%. Ontario has a higher share of single-parent households than the great majority of California cities.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Ontario
Renters in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 40.7% | 32.3% | 42.6% | 33.3% |
| 2010–14 | 45.0% | 36.6% | 45.2% | 35.6% |
| 2015–19 | 46.2% | 36.7% | 45.2% | 36.0% |
| 2020–24 | 42.0% | 34.2% | 44.1% | 34.8% |
| Change | +1.4 pts | +1.9 pts | +1.5 pts | +1.5 pts |
Renting is more common in Ontario than nationally: 42.0% of households rent their homes, against 34.8% for the U.S. About three in ten owners (29.7%) have paid off their mortgages, well below the national share of 39.8%. Renting is most common in the northeast and least common in the southeast. The renter share has edged up 1.4 points since 2006–10, in line with the national trend.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.6% | 11.8% | 8.7% | 11.4% |
| 2010–14 | 8.1% | 10.9% | 8.1% | 11.4% |
| 2015–19 | 5.2% | 9.4% | 7.5% | 11.1% |
| 2020–24 | 5.5% | 7.8% | 7.3% | 9.6% |
| Change | −4.1 pts | −4.0 pts | −1.4 pts | −1.8 pts |
Only 5.5% of homes in Ontario are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Vacancy has fallen 4.1 points since 2006–10, mirroring the country.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1975 | 1983 | 1972 | 1974 |
| 2010–14 | 1974 | 1984 | 1973 | 1975 |
| 2015–19 | 1975 | 1984 | 1974 | 1977 |
| 2020–24 | 1981 | 1986 | 1976 | 1980 |
| Change | +6 | +3 | +4 | +6 |
Homes in Ontario are about the same age as the nation's housing: the median home was built in 1981, versus 1980 nationally. Homes here are older than in the wider Riverside area, where the median home dates to 1986. The median year built has moved up from 1975 in 2006–10, a sign of steady new building. The newest homes are mostly in the southeast, the oldest in the northwest.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,270 | $1,287 | $1,298 | $965 |
| 2010–14 | $1,354 | $1,332 | $1,379 | $1,040 |
| 2015–19 | $1,594 | $1,549 | $1,721 | $1,213 |
| 2020–24 | $2,197 | $2,083 | $2,229 | $1,571 |
| Change | +$927 | +$796 | +$931 | +$606 |
Rent in Ontario runs $2,197 a month at the median, utilities included, well above the U.S. median of $1,571. Rent has climbed $927 a month since 2006–10, up 73%, faster than rents rose nationally. The typical renter here spends 38.8% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. The priciest rents are in the southeast; the most affordable are in the northwest.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Ontario
Bachelor's degrees in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.2% | 19.2% | 29.1% | 28.4% |
| 2010–14 | 14.4% | 19.4% | 30.1% | 29.6% |
| 2015–19 | 17.8% | 21.2% | 32.9% | 32.1% |
| 2020–24 | 24.2% | 24.0% | 36.3% | 35.6% |
| Change | +7.0 pts | +4.8 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in Ontario: 24.2% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. The share with a degree has risen 7.0 points since 2006–10, as it has nationally. College graduates are most concentrated in the southeast and least in the center.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 71.0% | 77.9% | 79.9% | 84.9% |
| 2010–14 | 71.0% | 78.6% | 80.7% | 86.1% |
| 2015–19 | 74.6% | 80.6% | 82.6% | 87.7% |
| 2020–24 | 79.0% | 82.5% | 84.2% | 89.3% |
| Change | +8.1 pts | +4.6 pts | +4.3 pts | +4.3 pts |
Just over one in five adults in Ontario never finished high school, well above the national share: only 79.0% have a diploma or equivalent, against 89.3% nationally. The share with a diploma has risen 8.1 points since 2006–10, in line with the national trend.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Ontario
| Period | Ontario | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.4% | 11.4% | 9.2% | 8.1% |
| 2010–14 | 12.9% | 14.4% | 11.3% | 9.4% |
| 2015–19 | 6.5% | 7.7% | 6.3% | 5.6% |
| 2020–24 | 5.8% | 6.8% | 6.6% | 5.4% |
| Change | −5.6 pts | −4.6 pts | −2.6 pts | −2.7 pts |
At 5.8%, unemployment in Ontario is close to the national rate of 5.4%. The rate is lower than in the Riverside area as a whole (6.8%). Since 2006–10, unemployment has fallen 5.6 points, as it has nationally.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Ontario compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Ontario | 3.43 | 34.5 | 16.8% | 42.0% | 5.5% | 1981 | $2,197 | 24.2% | 79.0% | 5.8% |
| Chino | 3.33 | 37.3 | 13.1% | 35.5% | 5.1% | 1988 | $2,350 | 27.9% | 86.3% | 6.6% |
| Montclair | 3.57 | 33.9 | 17.8% | 46.0% | 4.4% | 1971 | $1,853 | 18.1% | 73.7% | 6.1% |
| Upland | 2.91 | 40.5 | 12.9% | 41.2% | 4.3% | 1977 | $2,301 | 38.2% | 91.2% | 5.2% |
| Rancho Cucamonga | 3.00 | 38.7 | 10.3% | 40.0% | 4.8% | 1990 | $2,557 | 37.6% | 91.2% | 5.6% |
| Claremont | 2.57 | 40.9 | 9.4% | 36.5% | 12.2% | 1963 | $2,305 | 60.1% | 94.3% | 5.3% |
| Eastvale | 3.97 | 36.5 | 9.0% | 19.2% | 3.3% | 2007 | $3,204 | 43.5% | 89.8% | 4.2% |
| Pomona | 3.52 | 36.9 | 16.1% | 45.8% | 5.0% | 1967 | $1,976 | 19.5% | 72.7% | 6.4% |
| Alta Loma | 3.02 | 46.6 | 7.3% | 22.5% | 4.8% | 1984 | $2,607 | 41.4% | 94.3% | 5.7% |
| Chino Hills | 3.08 | 41.2 | 7.1% | 30.5% | 3.7% | 1991 | $2,997 | 48.5% | 93.3% | 6.6% |
| Mira Loma | 3.87 | 36.0 | 10.4% | 28.7% | 4.5% | 1985 | $2,461 | 19.4% | 76.5% | 4.1% |
All figures 2020–24.
Cities with similar populations: Lawrence, KS · Lehi, UT · Lehigh Acres, FL · Littleton, CO · Lexington, SC · Lodi, CA · Las Vegas, NV · Lima, OH · Las Cruces, NM · Layton, UT
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Ontario. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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