what county is spring valley ny in
Spring Valley, NY. Spring Valley, incorporated on July 9, 1902 is a village spanning the Town of Ramapo and Town of Clarkstown in Rockland County, New York, United States located north of Nanuet; east of Airmont and Monsey; south of Hillcrest and west of West Nyack. The population was 25,464 at the 2000 census.