Colby is located in Clark County, WI. The population is 1,656, making Colby the 3rd largest city in Clark County.
There are 4 public schools in Colby with an average Homefacts rating of C+. The total crime rate for Colby is very low, and there are 11 registered sex offenders residing in the city. Unemployment in Colby is low and the median home sales price is $0.