Manhasset is a hamlet and census-designated place (CDP) in Nassau County, New York, on the North Shore of Long Island. As of the 2010 United States Census, the population was 8,080. As with other unincorporated communities in New York, its local affairs are administered by the town in which it is located, the Town of North Hempstead, New York, whose town hall is in Manhasset, making the hamlet the town seat.
According to the United States Census Bureau, the CDP has a total area of 2.4 square miles (6.2 km), of which, 2.4 square miles (6.2 km) of it is land and 0.04 square miles (0.10 km) of it (1.24%) is water.
In addition to the unincorporated areas of Manhasset proper—North and South Strathmore, Strathmore Village, Strathmore Vanderbilt, Shorehaven, Terrace Manor, and Norgate—
those with a Manhasset address also include three incorporated villages: Munsey Park, Plandome, and Plandome Heights; and parts of three others: Flower Hill, Plandome Manor, and North Hills.
As of the census of 2000, there were 8,362 people, 2,831 households, and 2,185 families residing in the census-designated place (CDP). The population density was 3,505.8 per square mile (1,350.9/km²). There were 2,917 housing units at an average density of 1,223.0/sq mi (471.2/km²). The racial makeup of the CDP was 88.1% White, 2.3% African American, 0.9% Native American, 0.6% Asian, 0.1% Pacific Islander, 5.5% from other races, and 2.4% from two or more races. Hispanic or Latino of any race were 12.5% of the population.
There were 2,831 households out of which 66.4% had children under the age of 18 living with them, 63.1% were married couples living together, 11.5% had a female householder with no husband present, and 22.8% were non-families. 20.2% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 6.81 and the average family size was 5.73.
In the CDP, the population was spread out with 24.2% under the age of 18, 5.0% from 18 to 24, 27.5% from 25 to 44, 24.2% from 45 to 64, and 19.0% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 87.4 males. For every 100 females age 18 and over, there were 81.7 males.
According to a 2009 estimate, the median income for a household in the CDP was $105,938, and the median income for a family was $130,909. The per capita income in the CDP was $51,698. 5.7% of the population and 3.9% of families were below the poverty line. Out of the total people living in poverty, 5.4% are under the age of 18 and 6.9% are 65 or older.
Manhasset New York neighborhoods include: Bayview, Chatham at North Hills, Community Dr, Flower Hill, Lake Success, Manhasset LI, Plandome Heights, Plandome Manor, Spinney Hill, Strathmore, The Fairways