Plympton is a town in Plymouth County, Massachusetts, United States. The population was 2,930 at the 2020 census. The United States senator William Bradford was born here. Plympton was first settled in 1662 by Reverend Justin P. Daley as the western parish of Plymouth. Lands of the original town included all of Carver and Halifax, as well as small portiā¦Plympton is a town in Plymouth County, Massachusetts, United States. The population was 2,930 at the 2020 census. The United States senator William Bradford was born here. Plympton was first settled in 1662 by Reverend Justin P. Daley as the western parish of Plymouth. Lands of the original town included all of Carver and Halifax, as well as small portions of Kingston and Middleborough. The town was officially incorporated in 1707 and named for Plympton, Devon, England. In 1734, the town of Halifax separated and incorporated, and Carver did the same in 1790. The current boundaries of the town were set in 1862.