County Road O in Collingsworth County, Texas

County Road O in Collingsworth County is a residential street. It runs in an east-west direction starting from County Line Road 5 and crosses County Road 10, County Road 20, County Road 30, County Road 40 and County Road 60 and ends at County Road 90. County Road O also exists in Sherman County, Hansford County, Ochiltree County, Lipscomb County and Hartley County.