Hauppauge, New York

Hauppauge, New York
H. Lee Dennison Suffolk County Executive Building with a monument to war dogs
Motto: 
"The Land of Sweet Waters"
U.S. Census map
Hauppauge
Location on Long Island
Hauppauge
Location within the state of New York
Coordinates: 40°49′6″N 73°12′25″W / 40.81833°N 73.20694°W / 40.81833; -73.20694
Country United States
State New York
CountySuffolk
TownsIslip, Smithtown
Area
 • Total
10.29 sq mi (26.66 km2)
 • Land10.20 sq mi (26.43 km2)
 • Water0.089 sq mi (0.23 km2)
Elevation
62 ft (19 m)
Population
 (2022)
 • Total
20,083
 • Density1,967.7/sq mi (759.75/km2)
Time zoneUTC−5 (Eastern (EST))
 • Summer (DST)UTC−4 (EDT)
ZIP Codes
11749, 11760, 11788
Area codes631, 934
FIPS code36-32732
GNIS feature ID0952381

Hauppauge (/ˈhɔːpɒɡ/ HAW-pog) is a hamlet and census-designated place (CDP) in the towns of Islip and Smithtown in western Suffolk County, New York, on Long Island. The population was 20,803 at the time of the 2020 census.

Despite the official county seat of Suffolk County being Riverhead, situated further east, many of the county's government offices are located in Hauppauge.