Grant Valentine Chestnut Ridge is a village in the town of Ramapo, Rockland County, New York, United States, located north of the state of New Jersey, east of Airmont, south of Spring Valley, and west of Nanuet.

Prior to 1986, Chestnut Ridge was an unincorporated area within the town of Ramapo often referred to as "South Spring Valley" (its fire district), as many postal addresses carried the Spring Valley designation.

In April 2020, mayor Rosario Presti appointed Chaim Rose to fill a vacancy on the village board of trustees; Rose thus became the first Hasidic member of the board since the village was incorporated in 1986.

[3] According to the United States Census Bureau, the village has a total area of 4.9 square miles (13 km2), all land.

13.6% of all households were made up of individuals, and 6.6% had someone living alone who was 65 years of age or older.