Hauppauge (/ˈhɔːpɒɡ/ HAWP-og) is a hamlet and census-designated place (CDP) in the towns of Islip and Smithtown in Suffolk County, New York, United States. The population was 20,882 at the time of the 2010 census.
Hauppauge is located at 40°49′6″N 73°12′25″W / 40.81833°N 73.20694°W / 40.81833; -73.20694 (40.818205, -73.206878). According to the United States Census Bureau, the CDP has a total area of 10.8 square miles (28.1 km), of which 10.7 square miles (27.7 km) is land and 0.15 square miles (0.4 km), or 1.37%, is water. The name comes from the Native American word for “sweet waters.” Local Native American tribes would get their fresh drinking water from this area, instead of near Lake Ronkonkoma where the water was not drinkable. Hauppauge is known for the underground water springs and high underground water table.
As of the census of 2010, there were 20,882 people, 7,333 households, and 5,623 families residing in the CDP. The population density was 1,900.0 per square mile (740.0/km²). There were 7,566 housing units at an average density of 700.6/sq mi (270.4/km²). The racial makeup of the CDP was 89.2% White, 2.2% African American, 0.1% Native American, 5.9% Asian, 0.0% Pacific Islander, 1.3% from other races, and 1.3% from two or more races. Hispanic or Latino of any race were 7.1% of the population.
There were 7,333 households, out of which 36% had children under the age of 18 living with them, 65.1% were married couples living together, 8.4% had a female householder with no husband present, and 23.3% were non-families. 19.1% of all households were made up of individuals and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.25.
The median age was 42.5 years. For every 100 females, there were 96.4 males.
According to a 2015 estimate, the median income for a household in the CDP was $105,305, and the median income for a family was $120,044. The per capita income for the CDP was $41,499. About 2.2% of families and 3.5% of the population were below the poverty line, including 4.9% of those under age 18 and 1.6% of those age 65 or over.
Hauppauge New York neighborhoods include: Brettonwoods, Cardinal Ln/Eagle Ln, Hunts Pond, Northfield Woods, Rinx Park, Smithtown Sitters, Wheeler – Long Island, Windwatch