Harnett -- U.S. County in North Carolina Population (2000): 91025 Housing Units (2000): 38605 Land area (2000): 595.012697 sq. miles (1541.075745 sq. km) Water area (2000): 6.287338 sq. miles (16.284130 sq. km) Total area (2000): 601.300035 sq. miles (1557.359875 sq. km) Located within: North Carolina (NC), FIPS 37 Location: 35.352695 N, 78.782390 W Headwords: Harnett Harnett, NC Harnett County Harnett County, NC