Marsh Township is one of fifteen townships in Surry County, North Carolina, United States. The township had a population of 2,371 according to the 2020 census. Geographically, Marsh Township occupies 24.1 square miles in southern Surry County, with its southern border consisting of the Yadkin River. There are no incorporated municipalities within …Marsh Township is one of fifteen townships in Surry County, North Carolina, United States. The township had a population of 2,371 according to the 2020 census. Geographically, Marsh Township occupies 24.1 square miles in southern Surry County, with its southern border consisting of the Yadkin River. There are no incorporated municipalities within Marsh Township; however, there are several smaller, unincorporated communities located here, including Burch, Crutchfield, Fairview and Little Richmond.