Ballwin is located in St. Louis County, MO. The population is 30,430, making Ballwin the 6th largest city in St. Louis County.
There are 12 public schools in Ballwin with an average Homefacts rating of A. The total crime rate for Ballwin is very low , and there are 58 registered sex offenders residing in the city. Unemployment in Ballwin is low and the median home sales price is $0. Detailed and up-to-date Ballwin property reports are available for any property address.