West Babylon is a census-designated place (CDP) in the Town of Babylon in Suffolk County, New York, United States. The population was 43,213 at the 2010 census.
West Babylon is located at 40°43′49″N 73°21′27″W (40.713399, -73.357106).
West Babylon is bordered to the west by Lindenhurst and North Lindenhurst, to the northwest by East Farmingdale, to the north by Wyandanch, to the northeast by Deer Park, to the east by North Babylon and the Village of Babylon, and to the south by the Great South Bay.
According to the United States Census Bureau, the CDP has a total area of 8.0 square miles (21 km2), of which 7.7 square miles (20 km2) is land and 0.3 square miles (0.78 km2), or 3.87%, is water.
The peninsula in the southwest of the CDP is known as Venetian Shores. Served by the Lindenhurst Post Office and School District, this area is almost always considered a part of Lindenhurst.
As of the census of 2010, there were 43,213 people and 14,537 households in the CDP, with 2.93 persons per household. The population density was 5,540.1 people per square mile (2,149.9/km2).
The racial makeup of the CDP was 79.9% White, 11.2% African American, 0.2% Native American, 2.7% Asian, 0.05% Pacific Islander, 3.6% some other race, and 2.3% from two or more races. Hispanic or Latino of any race were 12.2% of the population. The CDP was 72.5% non-Hispanic White.
There were 14,537 households, out of which 36.7% had children under the age of 18 living with them, 54.3% were headed by married couples living together, 13.4% had a female householder with no husband present, and 27.3% were non-families. 22.0% of all households were made up of individuals, and 10.0% were someone living alone who was 65 years of age or older.