Brentwood, New York

Brentwood, New York
The Brentwood Fire Department in 2014.
Nickname: 
"The Jewel of Long Island"
U.S. Census map of Brentwood.
Brentwood, New York
Location within the state of New York.
Brentwood, New York
Brentwood, New York (New York)
Coordinates: 40°46′54″N 73°14′39″W / 40.78167°N 73.24417°W / 40.78167; -73.24417
Country United States
State New York
CountySuffolk
TownIslip
Named afterBrentwood, Essex
Area
 • Total
10.95 sq mi (28.36 km2)
 • Land10.95 sq mi (28.36 km2)
 • Water0 sq mi (0.00 km2)
Elevation
79 ft (24 m)
Population
 (2020)
 • Total
62,387
 • Density5,697.4/sq mi (2,199.77/km2)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP code
11717
Area codes631, 934
FIPS code36-08026
GNIS feature ID0944688

Brentwood is a hamlet in the Town of Islip in Suffolk County, on Long Island, in New York, United States. The population was 62,387 at the 2020 Census, making it the most populous CDP in Suffolk County and on all of Long Island outside of New York City.