to
Update
is a village in the Town of Ramapo Rockland County, New York, United States located north of the state of New Jersey; east of Monsey; south of Spring Valley and west of Nanuet. The population was 7,829 at the 2000 census.
Chestnut Ridge was incorporated in 1986. Prior to 1986, Chestnut Ridge was an unincorporated area within the Town of Ramapo. It was often referred to as "South Spring Valley", as postal addresses carried the Spring Valley designation (as they still do), but it was not actually part of the village of Spring Valley.
According to the United States Census Bureau, the village has a total area of 4.9 square miles (12.8 km²), all of it land.