Farmington is a town in Strafford County, New Hampshire, United States. The population was 6,722 at the 2020 census. Farmington is home to Blue Job State Forest, the Tebbetts Hill Reservation, and Baxter Lake. The town center, where 3,824 people resided at the 2020 census, is defined by the U.S. Census Bureau as the Farmington census-designated place and is located at the junction of New Hampshire routes 75 and 153.