郡道
County routes in Niagara County are not signed, and there is no apparent numbering pattern. Most of the county routes act as primary roads in the less developed areas and also serve to interconnect the various villages and hamlets of Niagara County. Niagara County maintains few county routes, including only the most important connecting thoroughfares, and those are maintained by the Niagara County highway department. Most of the roads in the County, including many of the local through highways, are maintained by the towns.