Somerset -- U.S. County in New Jersey Population (2000): 297490 Housing Units (2000): 112023 Land area (2000): 304.686641 sq. miles (789.134743 sq. km) Water area (2000): 0.363848 sq. miles (0.942362 sq. km) Total area (2000): 305.050489 sq. miles (790.077105 sq. km) Located within: New Jersey (NJ), FIPS 34 Location: 40.566953 N, 74.580607 W Headwords: Somerset Somerset, NJ Somerset County Somerset County, NJ