Collinsville is located in St. Clair County, IL. The population is 25,778, making Collinsville the 4th largest city in St. Clair County.
There are 9 public schools in Collinsville with an average Homefacts rating of C+. The total crime rate for Collinsville is low , and there are 4 registered sex offenders residing in the city. Unemployment in Collinsville is moderate and the median home sales price is $0. Detailed and up-to-date Collinsville property reports are available for any property address.
Cities near Collinsville include Collinsville Township, Caseyville and Maryville.