what county is dunsmuir california in
Homefacts City Report. Dunsmuir is located in Siskiyou County, CA. The population is 1,558, making Dunsmuir the 4th largest city in Siskiyou County. There are 5 public schools in Dunsmuir with an average Homefacts rating of C+. The total crime rate for Dunsmuir is low, and there are 13 registered sex offenders residing in the city.