Cherry Grove (often referred to locally as The Grove) is a hamlet in the Town of Brookhaven, Suffolk County, New York, United States. It is located on Fire Island, a barrier island separated from the southern side of Long Island by the Great South Bay. The hamlet has approximately 300 houses on 41 acres (170,000 m2), a summer seasonal population of 2,000 and a year-round population of 15. In 2013, the Cherry Grove Community House and Theatre was listed on the National Register of Historic Places, one of only a few sites so far listed for their role in American LGBT history.