Plymouth is a borough in Luzerne County, Pennsylvania, 4 miles west of Wilkes Barre, on the Susquehanna River. It was settled in 1766 by the Susquehanna Company and was claimed by Connecticut based on the charter of that colony. The Pennamite-Yankee War was fought in the environs. It is situated in the rich hard coal fields of the State. Coal was first shipped in 1807. In the past, the chief products of its industrial establishments included mining drilling machines, miners' squibs, hosiery, silk, lumber products, etc. In 1900, 13,649 people lived in Plymouth, in 1910, 16,996 stayed here; in 1920, 16,500; and 15,507 people lived here in 1940. The population was 6,507 at the 2000 census.