Warren -- U.S. County in Tennessee Population (2000): 38276 Housing Units (2000): 16689 Land area (2000): 432.685780 sq. miles (1120.650977 sq. km) Water area (2000): 1.395472 sq. miles (3.614257 sq. km) Total area (2000): 434.081252 sq. miles (1124.265234 sq. km) Located within: Tennessee (TN), FIPS 47 Location: 35.692650 N, 85.800735 W Headwords: Warren Warren, TN Warren County Warren County, TN