Hinsdale is a town in Cheshire County, New Hampshire, United States. The population was 3,948 at the 2020 census. Hinsdale is home to part of Pisgah State Park in the northeast, and part of Wantastiquet Mountain State Forest in the northwest. The main village in town, where 1,485 people resided at the 2020 census, is defined as the Hinsdale census-designated place and is located at the junction of New Hampshire routes 119 and 63.