List of county routes in Niagara County, New York
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.
Routes 1–50
| Route | Length | Length | From | Via | To | Notes |
| NY 148 / CR 15 in Barker | Coleman Road | Johnson Creek Road in Somerset | - | |||
| CR 24 in Newfane | West Somerset Road | NY 148 / CR 15 in Barker | - | |||
| Tuscarora Indian Reservation line in Lewiston | Upper Mountain Road | Lockport city line | - | |||
| Niagara Falls city line | Lockport Road | CR 96 in Pendleton | - | |||
| NY 78 in Lockport town | Slayton Settlement Road | Root Road in Royalton | - | |||
| CR 136 | Gasport Road in Royalton | New York Barge Canal | Segment between CR 108 and NY 31 was designated as NY 359 from 1930 to the early 1940s. | - | ||
| NY 93 | Gasport Road in Royalton | CR 136 | - | |||
| NY 265 | Upper Mountain Road in Lewiston town | Tuscarora Indian Reservation line | - | |||
| CR 58 | Rapids Road in Lockport | CR 85 | - | |||
| NY 425 | Loveland Road in Wheatfield | CR 20 | - | |||
| NY 93 in Lockport town | Beattie Avenue | CR 92 in Lockport city | - | |||
| NY 104 in Hartland | Quaker Road | Lower Lake Road in Somerset | CR 15 between NY 104 and NY 18 is co-designated with NY 148 | - | ||
| NY 104 in Lewiston town | Ransomville Road | NY 18 in Porter | - | |||
| NY 425 | Chestnut Road in Wilson | CR 111 | - | |||
| NY 104 in Cambria | Stone Road | CR 31 in Lockport town | - | |||
| CR 60 | Town Line Road on the Pendleton–Wheatfield town line | CR 13 | - | |||
| CR 31 | Plank Road in Lockport town | Lockport city line | - | |||
| NY 104 | Hess Road in Newfane | NY 18 | - | |||
| US 62 | Niagara Road in Wheatfield | NY 429 | - | |||
| CR 31 | Main Street in Middleport | Middleport village line | CR 26 between CR 31 and the village line is co-designated with NY 271 | - | ||
| Middleport village line | Main Street in Hartland | NY 104 | CR 26 between the village line and NY 104 is co-designated with NY 271 | - | ||
| CR 19 / CR 23 | Old Niagara Road in Lockport town | CR 77 | - | |||
| CR 6 in Wheatfield | Mapleton Road | NY 270 in Pendleton | - | |||
| CR 6 | Mapleton Road Spur in Wheatfield | CR 32 | - | |||
| CR 58 | Riddle Road in Royalton | NY 93 | - | |||
| NY 93 in Porter | Wilson-Youngstown Road | Wilson town line | - | |||
| CR 20 | Beach Ridge Road in Pendleton | NY 270 | - | |||
| CR 6 | Comstock Road in Cambria | NY 31 | - | |||
| Middleport | Main Street in Middleport | Mill Street | Former number; now part of CR 26. | - |
Routes 50–100
| Route | Length | Length | From | Via | To | Notes |
| Seneca Street in Wilson | Young Street and Wilson-Burt Road | NY 78 in Newfane | - | |||
| Griswold Street | Royalton Center Road in Royalton | NY 31 | - | |||
| NY 104 | Church Road in Cambria | NY 93 | - | |||
| NY 104 in Lewiston | Porter Center Road | NY 18 in Porter | - | |||
| CR 12 in Lockport town | Tonawanda Creek Road | Erie County line | - | |||
| CR 20 / CR 67 | Tonawanda Creek Road in Pendleton | NY 78 | - | |||
| CR 902 | Thrall Road in Cambria | CR 5 | - | |||
| NY 104 in Hartland | Hosmer Road | NY 18 in Somerset | - | |||
| North Tonawanda city line | Lockport Avenue in Wheatfield | CR 20 / CR 60 | - | |||
| CR 52 | North Beebe Road in Wilson | NY 18 | - | |||
| CR 31 in Lockport town | North Canal Road | NY 31 in Royalton | - | |||
| NY 18 | West Lake Road in Wilson | CR 36 | - | |||
| Niagara Falls city line | Packard Road in Niagara | CR 6 | - | |||
| NY 93 | Randall Road in Wilson | CR 36 | - | |||
| CR 12 | Raymond Road in Lockport town | NY 93 | - | |||
| NY 18F / CR 907 in Youngstown | Church Street and Blairville Road | NY 18 in Porter | - | |||
| North Tonawanda city line | Nash Road in Wheatfield | CR 6 | - | |||
| NY 78 | East Avenue and Charlotteville Road in Newfane | CR 24 | - | |||
| Lockport city line | Lincoln Avenue | NY 954M | - | |||
| US 62 | Crescent Drive in Wheatfield | CR 20 | - | |||
| Erie County line | Bear Ridge Road | Lockport city line | - | |||
| Erie County line | Picard Bridge Approach | CR 96 | - |
Routes 100–150
| Route | Length | Length | From | Via | To | Notes |
| NY 425 in Wilson | Ide Road | NY 78 in Newfane | - | |||
| NY 78 | Hatter Road in Newfane | CR 24 | - | |||
| New York Barge Canal in Royalton | Hartland Road | NY 18 in Somerset | Segment between NY 104 and CR 10 was designated as NY 359 from 1930 to the early 1940s. | - | ||
| NY 18 | Balmer Road in Porter | CR 17 | - | |||
| Erie County line | Block Church Road in Royalton | NY 93 | - | |||
| NY 104 in Cambria | Beebe Road | CR 52 | - | |||
| CR 58 | Tonawanda Creek Road in Royalton | CR 110 | - | |||
| NY 104 | Johnson Creek Road in Hartland | Bradley Road | - | |||
| NY 93 | Towline Road Spur in Lockport town | CR 902 | - | |||
| Niagara Falls city line | Fashion Outlet Boulevard in Niagara | NY 265 | - | |||
| CR 140 in Lewiston town | Lower Mountain Road | NY 425 in Cambria | - | |||
| NY 78 | Tonawanda Creek Road in Lockport town | CR 12 | - | |||
| NY 31 in Royalton | Orangeport Road | NY 104 in Hartland | - | |||
| CR 5 | Sunset Drive in Lockport town | NY 104 | - | |||
| CR 120 | Sunset Drive in Lockport town | NY 5 | - | |||
| NY 270 | Feigle Road in Pendleton | CR 130 | - | |||
| NY 93 | Wolcottsville Road in Royalton | Griswold Street | - | |||
| CR 122 | Old Wolcottsville Road in Royalton | CR 122 | - | |||
| CR 96 in Pendleton | Robinson Road | NY 93 in Lockport town | Formerly continued east to CR 14 | - | ||
| Gothic Hill Road | Niagara Street in Lockport town | CR 120 | - | |||
| Wilson town line | Young Street in Wilson village | Seneca Street | - | |||
| CR 19 | Johnson Road in Lockport town | NY 104 | - | |||
| CR 12 | Plank Road in Lockport town | CR 58 | - | |||
| CR 25 | Walmore Road in Wheatfield | CR 6 | - | |||
| Erie County line | East Canal Road in Pendleton | CR 123 | - | |||
| NY 31 in Royalton | Carmen Road | NY 18 in Somerset | - | |||
| CR 14 / CR 123 in Lockport town | Dysinger Road | NY 93 | Former number; now part of NY 93 | - | ||
| NY 148 / CR 15 in Somerset | Hart-Somerset Road | NY 269 in Hartland | - | |||
| NY 93 | Bunkerhill Road in Royalton | CR 10 | - | |||
| NY 104 | Ewings Road in Newfane | NY 78 | - | |||
| CR 907 | Jackson Street in Youngstown | Porter town line | Entire length concurrent with NY 18F | - | ||
| CR 116 | Dickersonville Road in Lewiston | NY 104 | - | |||
| CR 67 | Connecting Boulevard in Wheatfield | US 62 | - | |||
| Lockport city line | Akron Road | NY 93 in Royalton | Formerly part of NY 93 | - | ||
| NY 271 in Middleport | State Street | Orleans county line | Entire length concurrent with NY 31E | - |
Routes 902–907
There are four county highways with designations above 900 in the county road system. None of these designations are signed as Niagara County does not sign their highways, and thus are better known by their accompanying road name. The locations of the four routes are scattered across the county.Three of the four routes—CR 902, CR 903, and CR 905 —do not overlap other routes. The fourth, CR 907, is a designation for a long county-maintained portion of NY 18F alongside the Niagara River. All four highways were assigned by 1996 and are marked on New York State Department of Transportation digital raster quadrangles.
CR 907 is the highest three-digit county route in terms of designation in the state of New York. Overall, it is the second-highest numbered county route in the state; only CR 1345 in the Saratoga County town of Mechanicville has a higher designation.
| Route | Length | Length | From | Via | To | Notes |
| NY 425 in Cambria | Lower Mountain Road | Gothic Hill Road in Lockport town | Former alignment of NY 93 | - | ||
| NY 270 | Hinman Road in Lockport town | Lockport city line | - | |||
| NY 77 | Griswold Street in Royalton | NY 31 | - | |||
| Center Street in Lewiston village | Main Street | Fort Niagara State Park | Entire length concurrent with NY 18F | - |