Harper -- U.S. County in Kansas Population (2000): 6536 Housing Units (2000): 3270 Land area (2000): 801.438699 sq. miles (2075.716613 sq. km) Water area (2000): 1.512849 sq. miles (3.918261 sq. km) Total area (2000): 802.951548 sq. miles (2079.634874 sq. km) Located within: Kansas (KS), FIPS 20 Location: 37.212521 N, 98.064464 W Headwords: Harper Harper, KS Harper County Harper County, KS