Checked
Slope County, ND
2 cities and towns and 2 ZIP codes in Slope County, North Dakota.
Population
766
Land area
1,215sq mi
People per sq mi
1
ZIP codes
2
Cities and towns in Slope County
Slope County at a glance
- Slope County is 94% less dense than North Dakota as a whole.
- The median household income is $71,250, 7% below the North Dakota median of $76,657.
- A typical owner-occupied home is valued at $170,000 (32% below North Dakota) and median rent is $525 a month.
- Its largest cities are Marmarth (100) and Amidon (6).
Local data for Slope County, ND
Counts from official public data
Housing and community stats
Slope County, ND, American Community Survey 2020-2024
Median household income
$71,250
Poverty rate
5.0%
Median home value
$170,000
Median rent
$525/mo
Homeownership
80.7%
Bachelor's or higher
29.3%
Median age
54.1
Average commute
21.0 min
Largest reported origins and ancestries: German Americans (365), Norwegian Americans (165), Irish Americans (81).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.3%
Aug 2026, -0.2 pts in a year
Average annual pay
$66,521
99 jobs, 2025
Income per person
$36,609
BEA, 2024
Federal spending
$9.31M
FY 2026, $13,192 per person
PPP loans
$2.36M
133 loans, 205 jobs reported
Campaign donations
$928
Itemized, 2026 cycle
How people get to work
Slope County, ND, workers 16 and older. American Community Survey 5-year estimates
- Drove alone60.5%
- Carpooled10.0%
- Public transit0.0%
- Walked20.3%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.0%
- Worked from home9.3%
Average one-way commute: 21.0 minutes for people who do not work from home.
Environment and hazard risk
Slope County, ND, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
368
Most often high wind
Flood insurance policies
1
0.2% of homes, county
July high / Jan low
86° / 7°F
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Slope County, ND, CDC PLACES estimates
Obesity
38.3%
U.S. 33.3% +5.0 pts
Diabetes
14.6%
U.S. 12.1% +2.5 pts
Smoking
15.2%
U.S. 12.8% +2.4 pts
Uninsured (18-64)
6.9%
U.S. 11.1% -4.2 pts
Cities, towns and ZIP codes in Slope County
Population shown
Frequently asked questions
- What is the largest city in Slope County, ND?
- Marmarth is the largest city or town in Slope County, with about 100 residents.
- How many ZIP codes are in Slope County?
- Slope County includes 2 ZIP Code Tabulation Areas, including 58620, 58651.
- What is the population of Slope County, ND?
- About 766 people live in Slope County, based on American Community Survey 5-year estimates.
- What counties border Slope County?
- Slope County borders Stark County, Bowman County, Fallon County, MT, Hettinger County, Adams County, Golden Valley County, Billings County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023