Gosnold is a town that encompasses the Elizabeth Islands in Dukes County, Massachusetts, United States.At the 2020 census, the town population was 70, making it the least populous town in Massachusetts.Most of the residents live in the village of Cuttyhunk, while most of the land in the town is owned by the Forbes family

History. Washington was first settled in 1760 and was officially incorporated in 1777. The town was known by several different names, including Greenoch, Watsontown and Hartville, before being renamed in 1784 for George Washington. The town has always been rural, with few small industries, known more for being along the stage road to Pittsfield and along the rail line later.