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Sioux County, ND
5 cities and towns and 4 ZIP codes in Sioux County, North Dakota.
Population
3,740
Land area
1,094sq mi
People per sq mi
3
ZIP codes
4
Cities and towns in Sioux County
Sioux County at a glance
- Sioux County is 70% less dense than North Dakota as a whole.
- The median household income is $42,083, 45% below the North Dakota median of $76,657.
- A typical owner-occupied home is valued at $85,400 (66% below North Dakota) and median rent is $444 a month.
- Its largest cities are Cannon Ball (748), Selfridge (198) and Porcupine (138).
Local data for Sioux County, ND
Counts from official public data
Housing and community stats
Sioux County, ND, American Community Survey 2020-2024
Median household income
$42,083
Poverty rate
43.3%
Median home value
$85,400
Median rent
$444/mo
Homeownership
46.6%
Bachelor's or higher
16.3%
Median age
28.2
Average commute
17.8 min
Largest reported origins and ancestries: German Americans (342), Norwegian Americans (61), French Americans (50).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.3%
Aug 2026, 0.0 pts in a year
Average annual pay
$57,765
1,522 jobs, 2025
Income per person
$33,782
BEA, 2024
Federal spending
$97.1M
FY 2026, $24,919 per person
PPP loans
$9.3M
201 loans, 1,007 jobs reported
How people get to work
Sioux County, ND, workers 16 and older. American Community Survey 5-year estimates
- Drove alone69.1%
- Carpooled11.9%
- Public transit1.4%
- Walked9.0%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.7%
- Worked from home7.9%
Average one-way commute: 17.8 minutes for people who do not work from home.
Environment and hazard risk
Sioux County, ND, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: cold wave
Storm events since 1996
185
Most often hail
Flood insurance policies
3
0.3% of homes, county
July high / Jan low
86° / 1°F
Health statistics
Share of adults in Sioux County, ND, CDC PLACES estimates
Obesity
49.1%
U.S. 33.3% +15.8 pts
Diabetes
20.2%
U.S. 12.1% +8.1 pts
Smoking
32.9%
U.S. 12.8% +20.1 pts
Uninsured (18-64)
13.3%
U.S. 11.1% +2.2 pts
Cities, towns and ZIP codes in Sioux County
Population shown
Frequently asked questions
- What is the largest city in Sioux County, ND?
- Cannon Ball is the largest city or town in Sioux County, with about 748 residents.
- How many ZIP codes are in Sioux County?
- Sioux County includes 4 ZIP Code Tabulation Areas, including 58528, 58538, 58568, 58570.
- What is the population of Sioux County, ND?
- About 3,740 people live in Sioux County, based on American Community Survey 5-year estimates.
- What counties border Sioux County?
- Sioux County borders Morton County, Corson County, SD, Emmons County, Grant County, Adams County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023