Slope County, North Dakota Cities (2026)

City
Rank
2026 Pop. ↓
2020 Pop.
Annual Change
Density (/mi²)
Area (mi²)
Type
Marmarth189101-2.2%353 City
Amidon22024-4.76%321 City

Slope County Cities Summary

Largest City

Marmarth is the largest city in Slope County, with a population of 89.

Smallest City

Amidon is the smallest city in Slope County, with a population of 20.

10 Largest Cities

There are 2 cities in Slope County, North Dakota.

Location of Slope County