Ontario Flag

Ontario

County Seat:
No
Area (mi²):
49.984
State:
California

Ontario is a city located in San Bernardino County, California. Ontario has a 2025 population of 187,675 . Ontario is currently growing at a rate of 1.29% annually and its population has increased by 6.8% since the most recent census, which recorded a population of 175,723 in 2020.

The average household income in Ontario is $102,089 with a poverty rate of 12.68%. The median age in Ontario is 33.1 years: 33 years for males, and 33.1 years for females. For every 100 females there are 95.9 males.

187.7K
Total Population
3,755
Density (mi²)
2.4K 1.29%
Growth

Ontario Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)