County routes in Genesee County, New York, are not posted on route markers. However, the number is given, along with house numbers, often on intersection blade signs. There is no apparent numbering pattern.
County routes generally comprise one or more named roads, or portions thereof, strung together to form a single continuous unit. These usually extend for some distance, connecting primary highways in two or more towns. The majority of the county's roads are assigned to the towns. Nowhere does any county route wholly enter either a village or the city of Batavia.