List of county routes in Steuben County, New York

County routes in Steuben County, New York, are maintained by the Steuben County highway department and signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon shield. No county routes enter the cities of Corning or Hornell, and only two enter a village. Most primary through roads in Steuben County are either county routes or New York state highways.