Atlantic Beach is a village off the South Shore of Long Island in the Town of Hempstead, Nassau County, New York, United States. It is located on Long Beach Barrier Island, one of the outer barrier islands which it shares with Long Beach, East Atlantic Beach, Atlantic Beach Estates, Lido Beach and Point Lookout. To the North, Atlantic Beach is bordered by Reynold’s Channel and East Rockaway Inlet.
As of the census of 2000, there were 1,986 people, 766 households, and 569 families residing in the village. The population density was 4,114.8 people per square mile (1,597.5/km). There were 954 housing units at an average density of 1,976.6 per square mile (767.4/km). The racial makeup of the village was 96.98% White, 0.70% African American, 0.81% Asian, 0.55% from other races, and 0.96% from two or more races. Hispanic or Latino of any race were 2.97% of the population.
There were 766 households out of which 27.5% had children under the age of 18 living with them, 64.4% were married couples living together, 7.2% had a female householder with no husband present, and 25.6% were non-families. 22.5% of all households were made up of individuals and 9.7% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 2.93.
In the village, the population was spread out with 19.5% under the age of 18, 5.0% from 18 to 24, 21.6% from 25 to 44, 31.7% from 45 to 64, and 22.1% who were 65 years of age or older. The median age was 47 years. For every 100 females, there were 93.9 males. For every 100 females age 18 and over, there were 87.3 males.
The median income for a household in the village was $85,122, and the median income for a family was $93,647. Males had a median income of $67,583 versus $49,750 for females. The per capita income for the village was $44,035. About 3.9% of families and 5.6% of the population were below the poverty line, including 6.5% of those under age 18 and 2.2% of those age 65 or over.