Vermillion -- U.S. County in Indiana Population (2000): 16788 Housing Units (2000): 7405 Land area (2000): 256.888411 sq. miles (665.337903 sq. km) Water area (2000): 3.048483 sq. miles (7.895535 sq. km) Total area (2000): 259.936894 sq. miles (673.233438 sq. km) Located within: Indiana (IN), FIPS 18 Location: 39.802926 N, 87.443879 W Headwords: Vermillion Vermillion, IN Vermillion County Vermillion County, IN