Slope County, North Dakota Facts for Kids

Quick facts for kids Slope County
U.S. county
Former Slope County Courthouse in Amidon
Location within the U.S. state of North Dakota
North Dakota's location within the U.S.
Country	United States
State	North Dakota
Founded	November 3, 1914 January 14, 1915 (organized)
Seat	Amidon
Largest city	Marmarth
Area
• Total	1,219 sq mi (3,160 km²)
• Land	1,215 sq mi (3,150 km²)
• Water	4.2 sq mi (11 km²) 0.3%
Population (2020)
• Total	706
• Estimate (2021)	690
• Density	0.5792/sq mi (0.22362/km²)
Time zone	UTC−7 (Mountain)
• Summer (DST)	UTC−6 (MDT)
Congressional district	At-large

Slope County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 706, making it the least populous county in North Dakota and the 20th-least populous county in the United States. The county seat is Amidon.

Geography
Demographics
- 2010 census
Communities
- Cities
- Unincorporated communities
Images for kids
See also

Geography

White Butte in Slope County

According to the U.S. Census Bureau, the county has a total area of 1,219 square miles (3,160 km²), of which 1,215 square miles (3,150 km²) is land and 4.2 square miles (11 km²) (0.3%) is water.

White Butte, the highest natural point in North Dakota at an elevation of 3506 ft (1062 m), is in Slope County.

Major highways

U.S. Highway 12
U.S. Highway 85

National protected areas

Little Missouri National Grassland (part)
Stewart Lake National Wildlife Refuge
White Lake National Wildlife Refuge

Adjacent counties

Billings County (north)
Stark County (northeast)
Hettinger County (east)
Adams County (southeast)
Bowman County (south)
Fallon County, Montana (west)
Golden Valley County (southwest)

Demographics

Historical population
Census	Pop.	%±
1920	4,940	—
1930	4,150	−16.0%
1940	2,932	−29.3%
1950	2,315	−21.0%
1960	1,893	−18.2%
1970	1,484	−21.6%
1980	1,157	−22.0%
1990	907	−21.6%
2000	767	−15.4%
2010	727	−5.2%
2020	706	−2.9%
2021 (est.)	690	−5.1%
U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2020

2010 census

As of the 2010 census, there were 727 people, 326 households, and 224 families in the county. The population density was 0.60/sqmi (0.23/km²). There were 436 housing units at an average density of 0.36/sqmi (0.14/km²). The racial makeup of the county was 97.5% white, 2.2% American Indian, 0.0% from other races, and 0.3% from two or more races. Those of Hispanic or Latino origin made up 1.7% of the population. In terms of ancestry, 53.9% were of German, 30.7% Norwegian, 9.9% English, 7.4% Swedish, 5.5% Polish and 2.8% American ancestry.

Of the 326 households, 22.4% had children under the age of 18 living with them, 60.7% were married couples living together, 4.9% had a female householder with no husband present, 31.3% were non-families, and 29.4% of all households were made up of individuals. The average household size was 2.23 and the average family size was 2.74. The median age was 49.2 years.

The median income for a household in the county was $43,625 and the median income for a family was $55,833. Males had a median income of $36,458 versus $31,172 for females. The per capita income for the county was $24,824. About 6.8% of families and 10.5% of the population were below the poverty line, including 9.3% of those under age 18 and 11.7% of those age 65 or over.