Ontario is located in Vernon County, WI. The population is 507, making Ontario the 8th largest city in Vernon County.
There are 2 public schools in Ontario with an average Homefacts rating of C. The total crime rate for Ontario is very low , and there are 5 registered sex offenders residing in the city. Unemployment in Ontario is low and the median home sales price is $0. Detailed and up-to-date Ontario property reports are available for any property address.
Cities near Ontario include Whitestown, Sheldon and Forest.