Roslyn Harbor, New York  Roslyn Harbor is a village in Nassau County, New York, United States. The population was 1,051 at the 2010 census. It is considered part of the Greater Roslyn area, which is anchored by the village of Roslyn. The Incorporated Village of Roslyn Harbor lies in both the town of Oyster Bay and the town of North Hempstead. It is part of both the Roslyn and North Shore School Districts. Roslyn Harbor is located at (40.818114, -73.633895). According to the United States Census Bureau, the village has a total area of , all of it land. At the 2000 census there were 1,023 people, 356 households, and 301 families in the village. The population density was 858.9 people per square mile (331.9/km²). There were 367 housing units at an average density of 308.1 per square mile (119.1/km²). The racial makeup of the village was 91.59% White, 1.27% African American, 4.99% Asian, 1.08% from other races, and 1.08% from two or more races. Hispanic or Latino of any race were 3.32%. Of the 356 households 34.6% had children under the age of 18 living with them, 77.2% were married couples living together, 5.3% had a female householder with no husband present, and 15.4% were non-families. 12.6% of households were one person and 6.2% were one person aged 65 or older. The average household size was 2.87 and the average family size was 3.12. The age distribution was 23.5% under the age of 18, 4.3% from 18 to 24, 21.3% from 25 to 44, 31.5% from 45 to 64, and 19.5% 65 or older. The median age was 46 years. For every 100 females, there were 95.6 males. For every 100 females age 18 and over, there were 90.0 males. The median household income was $128,295 and the median family income was $150,000. Males had a median income of $100,000 versus $41,071 for females. The per capita income for the village was $69,778. About 1.3% of families and 2.5% of the population were below the poverty line, including 3.3% of those under age 18 and 2.3% of those age 65 or over.