Kosciusko -- U.S. County in Indiana Population (2000): 74057 Housing Units (2000): 32188 Land area (2000): 537.502699 sq. miles (1392.125540 sq. km) Water area (2000): 16.835077 sq. miles (43.602648 sq. km) Total area (2000): 554.337776 sq. miles (1435.728188 sq. km) Located within: Indiana (IN), FIPS 18 Location: 41.264505 N, 85.833206 W Headwords: Kosciusko Kosciusko, IN Kosciusko County Kosciusko County, IN