Ontario is located in San Bernardino County, CA. The population is 167,207, making Ontario the 4th largest city in San Bernardino County.
There are 44 public schools in Ontario with an average Homefacts rating of B-. The total crime rate for Ontario is moderate , and there are 179 registered sex offenders residing in the city. Unemployment in Ontario is moderate and the median home sales price is $0. Detailed and up-to-date Ontario property reports are available for any property address.