Syosset, New York

Syosset, New York
Downtown Syosset in 2025
Motto: 
"Together We Will Make a Difference"
Location in Nassau County and the state of New York
Syosset, New York
Location on Long Island
Syosset, New York
Location within the state of New York
Coordinates: 40°48′46″N 73°30′3″W / 40.81278°N 73.50083°W / 40.81278; -73.50083
Country United States
State New York
CountyNassau
TownOyster Bay
Area
 • Total
4.98 sq mi (12.89 km2)
 • Land4.98 sq mi (12.89 km2)
 • Water0 sq mi (0.00 km2)
Elevation
217 ft (66 m)
Population
 (2020)
 • Total
19,259
 • Density3,871.1/sq mi (1,494.65/km2)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP Codes
11773, 11791
Area codes516, 363
FIPS code36-72554
GNIS feature ID0970692
Websitesyossetchamber.com

Syosset /sˈɒsɪt/ is a hamlet and census-designated place (CDP) located within the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 19,259 at the time of the 2020 census.