West Nyack is a hamlet and census-designated place in the town of Clarkstown, Rockland County, New York, United States. It is located north of Blauvelt, east of Nanuet, southwest of Valley Cottage, southeast of Bardonia, and west of Central Nyack. It is approximately 18 miles (29 km) north of New York City. The population was 3,439 at the 2010 census.
West Nyack is located at 41°5′28″N 73°58′8″W / 41.09111°N 73.96889°W / 41.09111; -73.96889 (41.091096, -73.968785).
According to the United States Census Bureau, the CDP has a total area of 2.9 square miles (7.5 km), all land.
As of the census of 2000, there were 3,282 people, 1,107 households, and 892 families residing in the CDP. The population density was 1,125.9 per square mile (435.5/km²). There were 1,132 housing units at an average density of 388.3/sq mi (150.2/km²). The racial makeup of the CDP was 88.03% White, 1.98% African American, 0.03% Native American, 7.59% Asian, 0.98% from other races, and 1.40% from two or more races. Hispanic or Latino of any race were 5.58% of the population.
There were 1,107 households out of which 36.7% had children under the age of 18 living with them, 70.8% were married couples living together, 6.9% had a female householder with no husband present, and 19.4% were non-families. 14.2% of all households were made up of individuals and 6.1% had someone living alone who was 65 years of age or older. The average household size was 2.95 and the average family size was 3.27.
In the CDP, the population was spread out with 23.8% under the age of 18, 5.7% from 18 to 24, 29.2% from 25 to 44, 27.5% from 45 to 64, and 13.8% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.9 males. For every 100 females age 18 and over, there were 91.9 males.
The median income for a household in the CDP was $98,931, and the median income for a family was $106,576. Males had a median income of $67,326 versus $41,518 for females. The per capita income for the CDP was $40,178. About 1.0% of families and 2.6% of the population were below the poverty line, including 1.3% of those under age 18 and 5.2% of those age 65 or over.