Traill -- U.S. County in North Dakota Population (2000): 8477 Housing Units (2000): 3708 Land area (2000): 861.887463 sq. miles (2232.278186 sq. km) Water area (2000): 0.646294 sq. miles (1.673894 sq. km) Total area (2000): 862.533757 sq. miles (2233.952080 sq. km) Located within: North Dakota (ND), FIPS 38 Location: 47.452401 N, 97.188292 W Headwords: Traill Traill, ND Traill County Traill County, ND