Coney Island is a small island in the San Joaquin River delta, in California.[1][2][3][4] It is part of Contra Costa County, and managed by Reclamation District 2117.[5] Its coordinates are 37°50′45″N 121°32′58″W / 37.8457598°N 121.5493939°W / 37.8457598; -121.5493939.[6] It appears on a 1978 United States Geological Survey map of the area.[7]
This Contra Costa County, California–related article is a stub. You can help Wikipedia by expanding it.