Slope County, North Dakota

Slope County population, land area and income

Slope County had 660 residents in the Census Vintage 2024 estimate, on 1,215.3 square miles of land. It ranks 53rd of 53 in North Dakota by population and 25th by land area. That works out to 0.5 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in North Dakota has 3,853 residents, so Slope County has 17% of the typical county's population.

Its SAIPE 2023 median household income of $56,665 is below the national county median among 3,143 counties with an estimate.

How Slope County's population changed since 2020

Slope County lost 42 residents between the July 2020 and July 2024 estimates, a drop of 6.0%. That ranks 53rd of 53 in North Dakota for growth. The median North Dakota county changed by -1.3%, and the state as a whole by +2.2%.

Since the April 2020 estimates base, Slope County recorded 29 births and 12 deaths, a natural change of +17. Net international migration added +0 and net domestic migration, people moving to or from other US counties, came to -63. The largest single component was domestic migration, which removed 63 people.

Where Slope County is

The Census internal point of Slope County is at 46.445800, -103.462500. It sits in UTM zone 13N. The map shades North Dakota's 53 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Slope County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Slope County

No incorporated place of 1,000 or more people has residents in Slope County. Its 660 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Slope County

The Census 2024 county adjacency file lists 7 neighbors for Slope County, including 1 across a state line. The most populous is Stark County, ND, with 33,767 residents. Distances run between Census internal points in a straight line.

• Stark County

  33,767 people

  46 mi NE

• MT

  Fallon County, MT

  2,946 people

  46 mi W

• Bowman County

  2,886 people

  23 mi S

• Hettinger County

  2,419 people

  48 mi E

• Adams County

  2,141 people

  51 mi ESE

• Golden Valley County

  1,795 people

  39 mi NNW

• Billings County

  1,063 people

  39 mi N

Distance to Bismarck and the nearest big city

Bismarck is 129.7 miles ENE of Slope County's internal point in a straight line. The nearest place of 100,000 or more is Billings, MT (population 121,483), 247.9 miles away. The nearest place of 10,000 or more is Dickinson, ND (population 25,695), 44.2 miles away.

Slope County FIPS code

The FIPS code of Slope County is 38087: state code 38 for North Dakota plus county code 087. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $56,665.