Mahopac (ˈmeːəˌpæk or ˌməˈhoʊpæk) is a hamlet (and census-designated place) in the town of Carmel in Putnam County, New York, United States. Also known as Lake Mahopac, the exurb is located some north of New York City, on US Route 6 at the county's southern central border with Westchester County. As of the 2020 census, the population was 8,933.
Mahopac was originally inhabited by the Wappinger people, an Algonquian tribe. The hamlet's land was part of a huge tract encompassing all of today's Putnam County patented in 1697 by Adolphus Philipse, son of a wealthy Anglo-Dutch gentryman, known as the Philipse Patent. During the French and Indian War, Wappingers throughout Putnam County traveled north to Massachusetts to fight for the British.
When the British Crown refused to return their land after the war, most Wappingers abandoned the area, concentrating in Stockbridge, Massachusetts before relocating with other displaced Native Americans elsewhere. Farmers and thei