Ottawa is located in Lasalle County, IL. The population is 19,258, making Ottawa the largest city in Lasalle County.
There are 11 public schools in Ottawa with an average Homefacts rating of B-. The total crime rate for Ottawa is moderate , and there are 0 registered sex offenders residing in the city. Unemployment in Ottawa is very high and the median home sales price is $0. Detailed and up-to-date Ottawa property reports are available for any property address.
Cities near Ottawa include Ottawa Township, Naplate and Dayton.