Mills -- U.S. County in Texas Population (2000): 5151 Housing Units (2000): 2691 Land area (2000): 748.109973 sq. miles (1937.595854 sq. km) Water area (2000): 1.777118 sq. miles (4.602714 sq. km) Total area (2000): 749.887091 sq. miles (1942.198568 sq. km) Located within: Texas (TX), FIPS 48 Location: 31.496048 N, 98.594231 W Headwords: Mills Mills, TX Mills County Mills County, TX