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Dewey County, SD
9 cities and towns and 7 ZIP codes in Dewey County, South Dakota.
Population
5,205
Land area
2,302sq mi
People per sq mi
2
ZIP codes
7
Cities and towns in Dewey County
Dewey County at a glance
- Dewey County is 81% less dense than South Dakota as a whole.
- Households here earn a median of $54,104 a year, 28% less than the South Dakota figure of $75,081.
- A typical owner-occupied home is valued at $69,600 (73% below South Dakota) and median rent is $692 a month.
- The biggest population centers are North Eagle Butte (1,481), Eagle Butte (1,458) and Timber Lake (779).
Local data for Dewey County, SD
Counts from official public data
Housing and community stats
Dewey County, SD, American Community Survey 2020-2024
Median household income
$54,104
Poverty rate
33.0%
Median home value
$69,600
Median rent
$692/mo
Homeownership
61.2%
Bachelor's or higher
18.8%
Median age
27.7
Average commute
18.5 min
Largest reported origins and ancestries: German Americans (600), Irish Americans (225), Norwegian Americans (98).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.7%
Sep 2026, -2.0 pts in a year
Average annual pay
$55,096
2,348 jobs, 2025
Income per person
$57,103
BEA, 2024
Federal spending
$121M
FY 2026, $23,157 per person
PPP loans
$25.4M
844 loans, 2,782 jobs reported
Campaign donations
$49.7K
Itemized, 2026 cycle
How people get to work
Dewey County, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone71.9%
- Carpooled8.9%
- Public transit0.6%
- Walked2.4%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other2.7%
- Worked from home13.5%
Average one-way commute: 18.5 minutes for people who do not work from home.
Environment and hazard risk
Dewey County, SD, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: cold wave
Storm events since 1996
748
Most often hail
July high / Jan low
86° / 7°F
19.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone3 historic places
Health statistics
Share of adults in Dewey County, SD, CDC PLACES estimates
Obesity
43.6%
U.S. 33.3% +10.3 pts
Diabetes
18.0%
U.S. 12.1% +5.9 pts
Smoking
29.5%
U.S. 12.8% +16.7 pts
Uninsured (18-64)
13.4%
U.S. 11.1% +2.3 pts
Cities, towns and ZIP codes in Dewey County
Population shown
Frequently asked questions
- What is the largest city in Dewey County, SD?
- North Eagle Butte is the largest city or town in Dewey County, with about 1,481 residents.
- How many ZIP codes are in Dewey County?
- Dewey County includes 7 ZIP Code Tabulation Areas, including 57601, 57625, 57630, 57636, 57652.
- What is the population of Dewey County, SD?
- About 5,205 people live in Dewey County, based on American Community Survey 5-year estimates.
- What counties border Dewey County?
- Dewey County borders Walworth County, Corson County, Stanley County, Potter County, Ziebach County, Haakon County, Sully County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023