Heath is a town in Franklin County, Massachusetts, United States. The population was 723 at the 2020 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area. Heath was first settled in 1765 as a part of Charlemont. The town, as well as neighboring Rowe, separated, and Heath was officially incorporated in 1785, just a few d…Heath is a town in Franklin County, Massachusetts, United States. The population was 723 at the 2020 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area. Heath was first settled in 1765 as a part of Charlemont. The town, as well as neighboring Rowe, separated, and Heath was officially incorporated in 1785, just a few days after its new neighbor. The town is named after William Heath, Major General of Massachusetts and Brigadier General in the national army during the American Revolution.