Hunt & Live

Dewey County, SD

5,140 residents · 2,302 sq mi · 2.2/sq mi · 100% rural

Climate
45.1°F
18.7" rain/yr
Water
dry sub-humid
Aridity index 0.92
Hardiness
Zone 6b
Winter low ~-3.1°F

About Dewey County

Dewey County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 5,239. Its county seat is Timber Lake. The county was created in 1883 and organized in 1910. It was named for William P. Dewey, Territorial surveyor-general from 1873 to 1877.

41
Prepper Suitability
worsebetter
National rank: #2146 of 3,109
Locator map
Location within the continental US

Prepper Assessment

Living in this area offers a predominantly rural lifestyle with a low population density of 2.2 people per square mile, making it suitable for those seeking privacy and space. The climate features an annual mean temperature of 45.1°F with a growing season typical for USDA zone 6b. While the region receives 18.7 inches of rain annually, water availability may be limited due to its classification as dry sub-humid. The terrain is characterized by open spaces, which can provide opportunities for self-sufficient living, albeit with challenges in water access.

Risks in this area include a high likelihood of cold waves (FEMA rank 99) and winter weather events (rank 85), which can complicate daily life and agricultural practices. The wildfire risk is considerable at rank 83, while ice storms and hail also pose threats. While the violence percentile is moderate at 54, the overall safety metrics indicate a generally lower density environment. The median home price of $74,800 is relatively affordable, but the harsh winters may deter some potential residents.

This county may be a good fit for individuals or families who appreciate solitude and can adapt to harsh winter conditions, making it suitable for those with experience in cold-weather homesteading. However, it may not appeal to those who prefer milder climates or urban amenities. The dealbreaker for many could be the limited water resources and the high risk of severe winter weather, while the hidden gem might be the affordability of housing and the opportunity for expansive land ownership.

AI-generated analysis based on county data (climate, hazards, density, housing, economy). For general orientation only.

Key Facts

Ranked #1,291 nationally
Out of 3,109 CONUS counties for composite prepper suitability.
#58 of 66 in SD
Ranked #58 of 66 counties statewide for prepper suitability.
Dominant hazard: cold wave
FEMA ranks cold wave risk at 99/100 here — the leading natural threat.
Extremely rural
Only 2.2 people per square mile — fewer than 5/sqmi places you in the bottom 5% nationally for density.
Climate profile
Classified as dry sub-humid with a 45.1°F annual mean and 18.7" of annual precipitation. USDA hardiness zone 6b.
Housing & taxes
Median home value $74,800.

Score Breakdown

Violence
94
percentile (lower = safer)
Disasters
79
percentile (lower = safer)
Density
5
percentile (lower = emptier)
Overall FEMA Risk
78.7
NRI composite (0-100)

Natural Hazard Profile (FEMA NRI)

Cold Wave 99
Drought 28
Earthquake 12
Hail 58
Heat Wave 23
Riverine Flood 17
Ice Storm 65
Landslide 32
Lightning 16
Strong Wind 23
Tornado 24
Wildfire 83
Winter Weather 85

Monthly Climate (1991–2020 normals)

Average temperature
JFMAMJ JASOND
Monthly precipitation (inches)
JFMAMJ JASOND
Summer high
86.4°F
Winter low
6.9°F
Heating degree days
7,924
Cooling degree days
726

Housing & Economy

Median home value
$74,800
Median HH income
$55,077
Price to income
1.4×
Property tax rate
1.35%
~$1,008/yr median

Community Profile

Median age
27.1
Homeownership
60.7%
Poverty rate
30.9%
Unemployment
14.4%

Connectivity

Broadband households
62.9%
No internet access
27%

Explore Dewey County Further

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Data sources. Prepper scores are national percentile ranks of firearm fatalities (County Health Rankings 2024 / CDC WONDER), FEMA National Risk Index 2023 composite disaster score, and population density (ACS 2022 + TIGER 2022 land area). Climate from NOAA nClimDiv 1991–2020 normals. Hardiness zone is estimated from climate data and may differ from the official USDA PHZM. Demographics and housing from Census ACS 5-year 2022. All scores are for comparison purposes only and do not constitute advice about where to live.