Data / Rankings / National Risk Index score (FEMA) / Counties in South Dakota

Counties in South Dakota by national Risk Index score (FEMA), 2025

Minnehaha County had the highest national Risk Index score (FEMA) of 66 counties in 2025, at 89.5. Jones County had the lowest, at 1.3. The median was 19.2. Source: the Federal Emergency Management Agency.

Keep it in a collection in your library.
Highest89.5Minnehaha County
Lowest1.3Jones County
Median19.266 counties

Map of counties, 2025

Aurora County: 19.6 indexBeadle County: 47.1 indexBennett County: 5.9 indexBon Homme County: 10.9 indexBrookings County: 50.1 indexBrown County: 73.5 indexBrule County: 58.7 indexBuffalo County: 13.7 indexButte County: 23.3 indexCampbell County: 4.4 indexCharles Mix County: 48.5 indexClark County: 4.6 indexClay County: 20.5 indexCodington County: 61.8 indexCorson County: 38.1 indexCuster County: 16.4 indexDavison County: 39.3 indexDay County: 27.6 indexDeuel County: 6.9 indexDewey County: 78.7 indexDouglas County: 10.4 indexEdmunds County: 7 indexFall River County: 30.9 indexFaulk County: 8 indexGrant County: 18.9 indexGregory County: 16.2 indexHaakon County: 9.7 indexHamlin County: 10 indexHand County: 6.5 indexHanson County: 14.8 indexHarding County: 1.5 indexHughes County: 16.5 indexHutchinson County: 47.9 indexHyde County: 6.5 indexJackson County: 10.2 indexJerauld County: 9.5 indexJones County: 1.3 indexKingsbury County: 7.9 indexLake County: 32.6 indexLawrence County: 49.3 indexLincoln County: 63 indexLyman County: 26.5 indexMcCook County: 43.5 indexMcPherson County: 11.1 indexMarshall County: 14.5 indexMeade County: 49.5 indexMellette County: 5.2 indexMiner County: 3.4 indexMinnehaha County: 89.5 indexMoody County: 26.9 indexOglala Lakota County: 49.8 indexPennington County: 78.6 indexPerkins County: 2.6 indexPotter County: 10 indexRoberts County: 37.8 indexSanborn County: 3.6 indexSpink County: 17.7 indexStanley County: 5.1 indexSully County: 6.3 indexTodd County: 36.6 indexTripp County: 36.5 indexTurner County: 24 indexUnion County: 37.1 indexWalworth County: 39.5 indexYankton County: 63.4 indexZiebach County: 25.2 index
  • Under 6.4
  • 6.4 to 10
  • 10 to 19
  • 19 to 37
  • 37 to 49
  • 49 and over
index, 2025. Source: FEMA National Risk Index, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2025

Minnehaha County: 89.5 indexMinnehaha County89.5Dewey County: 78.7 indexDewey County78.7Pennington County: 78.6 indexPennington County78.6Brown County: 73.5 indexBrown County73.5Yankton County: 63.4 indexYankton County63.4Lincoln County: 63 indexLincoln County63Codington County: 61.8 indexCodington County61.8Brule County: 58.7 indexBrule County58.7Brookings County: 50.1 indexBrookings County50.1Oglala Lakota County: 49.8 indexOglala Lakota County49.8Meade County: 49.5 indexMeade County49.5Lawrence County: 49.3 indexLawrence County49.3Charles Mix County: 48.5 indexCharles Mix County48.5Hutchinson County: 47.9 indexHutchinson County47.9Beadle County: 47.1 indexBeadle County47.1McCook County: 43.5 indexMcCook County43.5Walworth County: 39.5 indexWalworth County39.5Davison County: 39.3 indexDavison County39.3Corson County: 38.1 indexCorson County38.1Roberts County: 37.8 indexRoberts County37.8Union County: 37.1 indexUnion County37.1Todd County: 36.6 indexTodd County36.6Tripp County: 36.5 indexTripp County36.5Lake County: 32.6 indexLake County32.6Fall River County: 30.9 indexFall River County30.9Day County: 27.6 indexDay County27.6Moody County: 26.9 indexMoody County26.9Lyman County: 26.5 indexLyman County26.5Ziebach County: 25.2 indexZiebach County25.2Turner County: 24 indexTurner County24Butte County: 23.3 indexButte County23.3Clay County: 20.5 indexClay County20.5Aurora County: 19.6 indexAurora County19.6Grant County: 18.9 indexGrant County18.9Spink County: 17.7 indexSpink County17.7Hughes County: 16.5 indexHughes County16.5Custer County: 16.4 indexCuster County16.4Gregory County: 16.2 indexGregory County16.2Hanson County: 14.8 indexHanson County14.8Marshall County: 14.5 indexMarshall County14.5Minnehaha County: 89.5 indexMinnehaha County89.5Dewey County: 78.7 indexDewey County78.7Pennington County: 78.6 indexPennington County78.6Brown County: 73.5 indexBrown County73.5Yankton County: 63.4 indexYankton County63.4Lincoln County: 63 indexLincoln County63Codington County: 61.8 indexCodington County61.8Brule County: 58.7 indexBrule County58.7Brookings County: 50.1 indexBrookings County50.1Oglala Lakota County: 49.8 indexOglala Lakota County49.8Meade County: 49.5 indexMeade County49.5Lawrence County: 49.3 indexLawrence County49.3Charles Mix County: 48.5 indexCharles Mix County48.5Hutchinson County: 47.9 indexHutchinson County47.9Beadle County: 47.1 indexBeadle County47.1McCook County: 43.5 indexMcCook County43.5Walworth County: 39.5 indexWalworth County39.5Davison County: 39.3 indexDavison County39.3Corson County: 38.1 indexCorson County38.1Roberts County: 37.8 indexRoberts County37.8Union County: 37.1 indexUnion County37.1Todd County: 36.6 indexTodd County36.6Tripp County: 36.5 indexTripp County36.5Lake County: 32.6 indexLake County32.6Fall River County: 30.9 indexFall River County30.9Day County: 27.6 indexDay County27.6Moody County: 26.9 indexMoody County26.9Lyman County: 26.5 indexLyman County26.5Ziebach County: 25.2 indexZiebach County25.2Turner County: 24 indexTurner County24Butte County: 23.3 indexButte County23.3Clay County: 20.5 indexClay County20.5Aurora County: 19.6 indexAurora County19.6Grant County: 18.9 indexGrant County18.9Spink County: 17.7 indexSpink County17.7Hughes County: 16.5 indexHughes County16.5Custer County: 16.4 indexCuster County16.4Gregory County: 16.2 indexGregory County16.2Hanson County: 14.8 indexHanson County14.8Marshall County: 14.5 indexMarshall County14.5
index. Source: FEMA National Risk Index, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Retrieved 2026-10-12.

Full ranking

RankCounties2025
index
1Minnehaha County89.5
2Dewey County78.7
3Pennington County78.6
4Brown County73.5
5Yankton County63.4
6Lincoln County63
7Codington County61.8
8Brule County58.7
9Brookings County50.1
10Oglala Lakota County49.8
11Meade County49.5
12Lawrence County49.3
13Charles Mix County48.5
14Hutchinson County47.9
15Beadle County47.1
16McCook County43.5
17Walworth County39.5
18Davison County39.3
19Corson County38.1
20Roberts County37.8
21Union County37.1
22Todd County36.6
23Tripp County36.5
24Lake County32.6
25Fall River County30.9
26Day County27.6
27Moody County26.9
28Lyman County26.5
29Ziebach County25.2
30Turner County24
31Butte County23.3
32Clay County20.5
33Aurora County19.6
34Grant County18.9
35Spink County17.7
36Hughes County16.5
37Custer County16.4
38Gregory County16.2
39Hanson County14.8
40Marshall County14.5
41Buffalo County13.7
42McPherson County11.1
43Bon Homme County10.9
44Douglas County10.4
45Jackson County10.2
46Potter County10
47Hamlin County10
48Haakon County9.7
49Jerauld County9.5
50Faulk County8
51Kingsbury County7.9
52Edmunds County7
53Deuel County6.9
54Hyde County6.5
55Hand County6.5
56Sully County6.3
57Bennett County5.9
58Mellette County5.2
59Stanley County5.1
60Clark County4.6
61Campbell County4.4
62Sanborn County3.6
63Miner County3.4
64Perkins County2.6
65Harding County1.5
66Jones County1.3

About this ranking

FEMA's composite natural hazard risk score for a US county, from 0 to 100: the county's national percentile rank among all counties for risk, which combines expected annual losses from 18 natural hazards with social vulnerability and community resilience. Higher means more risk.

The period is the year of the National Risk Index edition (the December 2025 edition is 2025), not a year of events. FEMA rebuilds the index with new data and methods in each edition, so values from different editions are not a time series. The index is meant for nationwide comparison and planning, not as a local risk assessment.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

Federal Emergency Management Agency. (2025). National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE) (Counties in South Dakota by national Risk Index score (FEMA), 2025) [Data set]. Retrieved October 12, 2026, from https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355

MLA 9

National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE), Counties in South Dakota by national Risk Index score (FEMA), 2025. Federal Emergency Management Agency, 16 Dec. 2025, https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Invokely, https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

Federal Emergency Management Agency. 2025. National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Counties in South Dakota by national Risk Index score (FEMA), 2025. Dataset. Accessed October 12, 2026. https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Also distributed by Invokely, https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties.

Harvard

Federal Emergency Management Agency (2025) National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE), Counties in South Dakota by national Risk Index score (FEMA), 2025 [Dataset]. Available at: https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355, via Invokely: https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties (Accessed: 12 October 2026).

BibTeX
@misc{federal_counties_in_south_dakota_2025,
  author = {{Federal Emergency Management Agency}},
  title = {{National Risk Index Counties, National Risk Index Score Composite (RISK\_SCORE): Counties in South Dakota by national Risk Index score (FEMA), 2025}},
  year = {2025},
  howpublished = {Data set},
  url = {https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties. Publisher attribution: Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK\_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).},
}
RIS
TY  - DATA
AU  - Federal Emergency Management Agency
TI  - National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE): Counties in South Dakota by national Risk Index score (FEMA), 2025
PY  - 2025
DA  - 2025/12/16
PB  - Federal Emergency Management Agency
DB  - Invokely
UR  - https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355
L2  - https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/national-risk-index-score/south-dakota-counties.
N1  - Publisher attribution: Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in South Dakota by national Risk Index score (FEMA) using official data, and cite the source.
rank_places {"indicator":"nri_risk_index_score","level":"province","within":"South Dakota","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=nri_risk_index_score&level=province&within=South%20Dakota&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest national Risk Index score (FEMA)?

Minnehaha County, with 89.5 in 2025, according to the Federal Emergency Management Agency.

Which county has the lowest national Risk Index score (FEMA)?

Jones County, with 1.3 in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Federal Emergency Management Agency, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Retrieved 2026-10-12.

National Risk Index score (FEMA): other rankings

Counties in South Dakota: more rankings