South Brooklyn is a historic term[1][2] for a section of the former City of Brooklyn – now the New York City borough of Brooklyn – encompassing what are now the Boerum Hill, Carroll Gardens, Cobble Hill, Gowanus, Park Slope, Windsor Terrace, Sunset Park and Red Hook neighborhoods.
[1][3][4] It was named for its location along the waterfront[5] that was the southern border of the original Village of Brooklyn, and has remained widely used[6] as a colloquialism despite it no longer being the southernmost point of the borough.
It has been used about neighborhoods as various and physically separated as Mill Basin, Bensonhurst,[8] Carroll Gardens,[9] Gowanus,[10] Red Hook,[11] Smith Street,[12] Sunset Park,[13] Windsor Terrace,[14] as well as Bay Ridge, Dyker Heights, and Park Slope.
[15][a] The New York City Subway's IND Culver Line (F and G trains) serves the area at the Carroll Street and Smith–Ninth Streets stations.
[18] However, this obsolete name for the Culver Line may have referred to the South Brooklyn Railway, the original right of way of the BMT Culver Line; this right-of-way originally ran between Sunset Park, in the southern part of the former city of Brooklyn, and Coney Island, the southernmost area in the modern borough of Brooklyn.