Black Rock is a neighborhood in the southwestern section of the city of Bridgeport, Connecticut. It borders Fairfield and the Ash Creek tidal estuary on the west, the West Side/West End of Bridgeport on the north and east, and Black Rock Harbor and Long Island Sound on the south. Black Rock comprises census tracts 701 and 702 and part of census tract 703. It includes two historic districts listed on the National Register of Historic Places.