Carroll -- U.S. County in Ohio Population (2000): 28836 Housing Units (2000): 13016 Land area (2000): 394.673096 sq. miles (1022.198582 sq. km) Water area (2000): 4.334412 sq. miles (11.226074 sq. km) Total area (2000): 399.007508 sq. miles (1033.424656 sq. km) Located within: Ohio (OH), FIPS 39 Location: 40.598906 N, 81.110801 W Headwords: Carroll Carroll, OH Carroll County Carroll County, OH