Slope -- U.S. County in North Dakota Population (2000): 767 Housing Units (2000): 451 Land area (2000): 1217.939586 sq. miles (3154.448913 sq. km) Water area (2000): 1.282691 sq. miles (3.322154 sq. km) Total area (2000): 1219.222277 sq. miles (3157.771067 sq. km) Located within: North Dakota (ND), FIPS 38 Location: 46.428212 N, 103.439994 W Headwords: Slope Slope, ND Slope County Slope County, ND