Clark -- U.S. County in Kansas Population (2000): 2390 Housing Units (2000): 1111 Land area (2000): 974.683888 sq. miles (2524.419575 sq. km) Water area (2000): 2.520935 sq. miles (6.529191 sq. km) Total area (2000): 977.204823 sq. miles (2530.948766 sq. km) Located within: Kansas (KS), FIPS 20 Location: 37.240275 N, 99.828006 W Headwords: Clark Clark, KS Clark County Clark County, KS