Somerset -- U.S. County in Pennsylvania Population (2000): 80023 Housing Units (2000): 37163 Land area (2000): 1074.658827 sq. miles (2783.353467 sq. km) Water area (2000): 6.510421 sq. miles (16.861912 sq. km) Total area (2000): 1081.169248 sq. miles (2800.215379 sq. km) Located within: Pennsylvania (PA), FIPS 42 Location: 39.997882 N, 79.029028 W Headwords: Somerset Somerset, PA Somerset County Somerset County, PA