Clarkstown is a town in Rockland County, New York, United States.

As of the 2010 Census, there were 84,187 people, 29,234 households, and 22,186 families residing in the Town of Clarkstown.

36.2% of all households were made up of individuals, and 31.8% had someone living alone who was 65 years of age of older.

16.9% of all households were made up of individuals, and 6.5% had someone living alone who was 65 years of age or older.

Clarkstown has more business districts in it than any other town in Rockland County, including the Palisades Center, which is among the largest malls in the world.

[12] In addition, Rockland Coaches provides express service to the Port Authority Bus Terminal in New York City from Park-and-Ride and other pickup locations in New City, Bardonia, West Nyack, and Nanuet via Route 49 and 49J, and local service to New York from New City, Valley Cottage, and Upper Nyack on Routes 9A, 9T, and 20.

[14] The majority of the town is served by the Clarkstown Central School District, which educates students in New City, Bardonia, Congers, and West Nyack.

[17] A small portion on the western town border is served by the East Ramapo Central School District.

Other steps included: Climate Action and Sustainability Planning - Training and Outreach In 1994, Clarkstown was involved in litigation that challenged a town ordinance, that required all waste picked up in the town to be sorted for recyclables at a specific privately operated facility.

The case made it to the United States Supreme Court in C&A Carbone, Inc. v. Town of Clarkstown, in which the ordinance was held unconstitutional.