North Babylon

As of the 2000 census, North Babylon had a population of 17,877 people, residing in 6,146 households and 4,707 families. The population density was 5,309.8 inhabitants per square mile (2,050.1/km2). There were 6,271 housing units at an average density of 1,862.6 per square mile (719.2/km2).

The racial makeup of the hamlet was 84.9% White, 6.2% African American, 0.17% Native American, 2.09% Asian, 0.03% Pacific Islander, 1.95% from other races, and 1.63% from two or more races. Hispanic or Latino of any race were 7.34% of the population.

Among the households, 33.4% had children under the age of 18 living with them, 62.3% were married couples living together, 10.5% had a female householder with no husband present, and 23.4% were non-families. The average household size was 2.90, and the average family size was 3.30.

In terms of age distribution, 23.5% of the population was under the age of 18, 6.8% were between 18 and 24, 33.2% were between 25 and 44, 22.3% were between 45 and 64, and 14.1% were 65 years of age or older. The median age was 38 years. For every 100 females, there were 92.6 males. For every 100 females age 18 and over, there were 89.9 males.

The median income for a household in the hamlet was $88,027, and the per capita income was $34,590. About 2.5% of families and 3.2% of the population were below the poverty line, including 2.0% of those under age 18 and 4.1% of those age 65 or over.