Collinsville is located in Dekalb County, AL. The population is 2,948, making Collinsville the 6th largest city in Dekalb County.
There are 1 public schools in Collinsville with an average Homefacts rating of D+. The total crime rate for Collinsville is very low, and there are 23 registered sex offenders residing in the city. Unemployment in Collinsville is moderate and the median home sales price is $0.