County routes in Otsego County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Road names for each route are listed below where applicable; however, most routes are known only by their county route designation. Numbers are assigned in a general southwest to northeast direction, with the lowest numbers located at the point where the Otsego, Chenango, and Delaware county lines meet north of Sidney. Signage for county routes in Otsego County were posted in July 1965.