County Road 21 in Swisher County, Texas

County Road 21 in Swisher County is a residential street. It runs in a north-south direction and crosses County Road S1, County Road T, County Road U, County Road V, County Road West, County Road X, County Road Y, Farm-to-Market Road 145, County Road AA and County Road BB and ends at County Road CC, while the other end is a cul-de-sac. County Road 21 also exists in Hansford County, Ochiltree County, Hutchinson County, Hemphill County and Oldham County.