Population density (sq mi)3,39225691
Median age31.936.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)50%52%55%
Families w/ Kids under 1851%46%43%
Speak English41%56%79%
Speak Spanish53%29%13%

Key findings

  • The population density in Ontario is 1225% higher than California
  • The median age in Ontario is 11% lower than California
  • In Ontario 48.11% of the population is White
  • In Ontario 6.15% of the population is Black
  • In Ontario 5.61% of the population is Asian

Compare Ontario, CA Demographics


      Ontario population breakdown by race

      American Indian0.72%0.74%0.82%
      Native Hawaiian0.35%0.39%0.18%
      Mixed race4.31%4.62%3.06%
      Other race34.74%13.28%4.75%
      In Ontario, 70.6% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Ontario age breakdown

      Marital status

      Age of children in married couples

      Source: The Ontario, CA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).