|A West-East road on the West side of the county in Gates|
|West: Interstate 490|
|East: Erie Canal near Interstate 390|
Route 204 is a fairly short connecting route that begins as the Airport Expressway but quickly diverts onto parts of Chili Avenue/Route 33A and Brooks Avenue. Currently it is notable for providing enhanced access from the West to the Greater Rochester International Airport, as well as Wegmans warehouses/headquarters.
Major intersections include Beahan Road and Howard Road.
For business listings along Route 204 see the detailed listings for Chili Avenue or Brooks Avenue.