Barnum Island, New York

Barnum Island, New York
Hamlet and census-designated place
Location in Nassau County and the state of New York.
Barnum Island, New York Location within the state of New York
Coordinates: 40°36′19″N 73°38′51″W / 40.60528°N 73.64750°W / 40.60528; -73.64750
Country	United States
State	New York
County	Nassau County, New York
Town	Hempstead
Area [1]
• Total	1.24 sq mi (3.21 km2)
• Land	0.86 sq mi (2.24 km2)
• Water	0.37 sq mi (0.97 km2)
Elevation	0 ft (0 m)
Population  (2020)
• Total	2,590
• Density	2,994.22/sq mi (1,155.44/km2)
Time zone	UTC-5 (EST)
• Summer (DST)	UTC-4 (EDT)
ZIP code	11558
Area code	516
FIPS code	36-04550
GNIS feature ID	1867393

Barnum Island is a hamlet and census-designated place (CDP) in Nassau County, New York, United States. The population was 2,590 at the 2020 census. It occupies the eastern portion of an island situated between Long Island and Long Beach. That island, previously known in its entirety as Hog Island, consists entirely of the communities of Barnum Island and Island Park.

Barnum Island is an unincorporated area of the Town of Hempstead. Most of Barnum Island is separated from the Village of Island Park by the LIRR's Long Beach Branch rail line to Long Beach.

Barnum Island has its own fire district and school district, but is under contract with the Village of Island Park for fire and education services for its residents. Barnum Island is included in the Island Park School District and ZIP code (11558).

The E.F. Barrett Power Station is located within the hamlet.