Head of the Harbor is a village in Suffolk County, New York, United States, on the North Shore of Long Island. As of the 2010 census, the village population was 1,472.
According to the United States Census Bureau, the village has a total area of 3.0 square miles (7.8 km), of which 2.8 square miles (7.3 km) is land and 0.2 square miles (0.52 km), or 7.52%, is water.
To the north of the village lies Stony Brook Harbor.
As of the census of 2000, there were 1,447 people, 484 households, and 413 families residing in the village. The population density was 513.6 people per square mile (198.1/km²). There were 501 housing units at an average density of 177.8 per square mile (68.6/km²). The racial makeup of the village was 95.02% White, 1.24% African American, 3.25% Asian, and 0.48% from two or more races. Hispanic or Latino of any race were 1.38% of the population.
There were 484 households out of which 38.4% had children under the age of 18 living with them, 77.9% were married couples living together, 4.3% had a female householder with no spouse present, and 14.5% were non-families. 11.4% of all households were made up of individuals and 3.5% had someone living alone who was 65 years of age or older. The average household size was 2.99 and the average family size was 3.23.
In the village, the population was spread out with 27.0% under the age of 18, 5.2% from 18 to 24, 25.0% from 25 to 44, 31.2% from 45 to 64, and 11.6% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 102.4 males. For every 100 women age 18 and over, there were 101.9 men.
The median income for a household in the village was $117,450, and the median income for a family was $129,157. Males had a median income of $97,095 versus $50,481 for females. The per capita income for the village was $52,999. About 1.2% of families and 1.5% of the population were below the poverty line, including none of those under age 18 and 2.9% of those age 65 or over.