Cassville is located in Grant County, WI. The population is 846, making Cassville the 9th largest city in Grant County.
There are 2 public schools in Cassville with an average Homefacts rating of A-. The total crime rate for Cassville is very low, and there are 2 registered sex offenders residing in the city. Unemployment in Cassville is low and the median home sales price is $0.