Mastic Beach, New York

Mastic Beach, New York
Hamlet and Census-designated place
The William Floyd House in Mastic Beach.
Location within Suffolk County and the State of New York.
Mastic Beach, New York
Coordinates: 40°45′41″N 72°50′47″W / 40.76139°N 72.84639°W / 40.76139; -72.84639
Country	United States
State	New York
County	Suffolk
Town	Brookhaven
Incorporated	August 31, 2010[1]
Dissolved	December 31, 2017[2]
Area [3]
• Total	6.00 sq mi (15.55 km2)
• Land	4.90 sq mi (12.69 km2)
• Water	1.10 sq mi (2.86 km2)
Elevation	7 ft (2 m)
Population  (2020)
• Total	14,199
• Density	2,898.94/sq mi (1,119.19/km2)
Time zone	UTC−05:00 (Eastern Time Zone)
• Summer (DST)	UTC−04:00
ZIP Code	11951
Area code(s)	631, 934
FIPS code	36-46085
GNIS feature ID	0970340

Mastic Beach is a hamlet and census-designated place, and former village in the southeastern part of the Town of Brookhaven in Suffolk County, on Long Island, in New York, United States. The population was 14,849 at the 2010 census, when it was an unincorporated census-designated place for the first time.^[4][5]