Marshfield is a town in Plymouth County, Massachusetts, United States, on Massachusetts's South Shore. The population was 25,132 at the 2010 census.See also: Green Harbor, Marshfield (CDP), Marshfield Hills, and Ocean Bluff-Brant Rock.GeographyMarshfield is located on the South Shore, about where Cape Cod Bay meets Massachusetts Bay.According to the United States Census Bureau, the town has a total area of 31.74 square miles (82.2 km²). 28.46 square miles (73.7 km²) of it is land and 3.28 square miles (8.5 km²) of it (10.33%) is water. Marshfield is bordered by Massachusetts Bay to the east, Duxbury to the south and southeast, Pembroke to the west, Norwell to the northwest, and Scituate to the north and northeast. Marshfield is east of Brockton and southeast of Boston.
