Updated April 2026
Flood Risk in South Dakota
South Dakota has 67 counties with flood risk data, 34 total NFIP flood insurance claims, and an average risk score of 12 out of 100.
67
Counties
34
NFIP Claims
$807,214
Total Payouts
12
Avg Risk Score
Grade Distribution
A
67
counties
B
0
counties
C
0
counties
D
0
counties
F
0
counties
Safest in South Dakota
| County | Grade | Score |
|---|---|---|
| Corson | A | 9 |
| Oglala Lakota | A | 9 |
| Harding | A | 9 |
| Dewey | A | 10 |
| Perkins | A | 10 |
All 67 Counties in South Dakota
Sorted by flood risk score, highest to lowest.
| # | County | Grade | Score | Claims | Payouts | Disasters |
|---|---|---|---|---|---|---|
| 1 | Hanson | A | 15 | 0 | $0 | 13 |
| 2 | Turner | A | 14 | 0 | $0 | 12 |
| 3 | Brown | A | 13 | 0 | $0 | 10 |
| 4 | Clark | A | 13 | 0 | $0 | 10 |
| 5 | Codington | A | 13 | 1 | $15,242 | 11 |
| 6 | Day | A | 13 | 0 | $0 | 10 |
| 7 | Grant | A | 13 | 0 | $0 | 10 |
| 8 | Hand | A | 13 | 0 | $0 | 10 |
| 9 | Roberts | A | 13 | 0 | $0 | 10 |
| 10 | Clay | A | 13 | 0 | $0 | 10 |
| 11 | Union | A | 13 | 1 | $29,583 | 10 |
| 12 | Aurora | A | 13 | 0 | $0 | 10 |
| 13 | Deuel | A | 13 | 0 | $0 | 10 |
| 14 | Hamlin | A | 13 | 6 | $46,274 | 10 |
| 15 | Sanborn | A | 13 | 0 | $0 | 11 |
| 16 | Kingsbury | A | 13 | 0 | $0 | 10 |
| 17 | Moody | A | 13 | 0 | $0 | 10 |
| 18 | Spink | A | 13 | 0 | $0 | 10 |
| 19 | Hutchinson | A | 13 | 0 | $0 | 10 |
| 20 | Lake Traverse Indian Reservation | A | 12 | 0 | $0 | 8 |
| 21 | Faulk | A | 12 | 0 | $0 | 9 |
| 22 | Marshall | A | 12 | 0 | $0 | 9 |
| 23 | Butte | A | 12 | 0 | $0 | 8 |
| 24 | Jerauld | A | 12 | 0 | $0 | 9 |
| 25 | Lincoln | A | 12 | 0 | $0 | 8 |
| 26 | Brule | A | 12 | 0 | $0 | 8 |
| 27 | Gregory | A | 12 | 0 | $0 | 9 |
| 28 | Lyman | A | 12 | 0 | $0 | 8 |
| 29 | Tripp | A | 12 | 0 | $0 | 9 |
| 30 | Beadle | A | 12 | 0 | $0 | 9 |
| 31 | Brookings | A | 12 | 1 | $2,688 | 8 |
| 32 | Buffalo | A | 12 | 0 | $0 | 9 |
| 33 | Edmunds | A | 12 | 0 | $0 | 9 |
| 34 | Lake | A | 12 | 12 | $530,690 | 9 |
| 35 | McCook | A | 12 | 0 | $0 | 8 |
| 36 | Miner | A | 12 | 0 | $0 | 8 |
| 37 | Charles Mix | A | 12 | 0 | $0 | 8 |
| 38 | Potter | A | 11 | 0 | $0 | 7 |
| 39 | Minnehaha | A | 11 | 8 | $163,781 | 6 |
| 40 | Jackson | A | 11 | 0 | $0 | 6 |
| 41 | Meade | A | 11 | 1 | $3,492 | 7 |
| 42 | Pennington | A | 11 | 4 | $15,464 | 7 |
| 43 | Walworth | A | 11 | 0 | $0 | 6 |
| 44 | Davison | A | 11 | 0 | $0 | 6 |
| 45 | Douglas | A | 11 | 0 | $0 | 7 |
| 46 | Hughes | A | 11 | 0 | $0 | 6 |
| 47 | Hyde | A | 11 | 0 | $0 | 7 |
| 48 | McPherson | A | 11 | 0 | $0 | 6 |
| 49 | Sully | A | 11 | 0 | $0 | 7 |
| 50 | Bon Homme | A | 11 | 0 | $0 | 6 |
| 51 | Yankton | A | 11 | 0 | $0 | 7 |
| 52 | Lawrence | A | 11 | 0 | $0 | 6 |
| 53 | Dewey | A | 10 | 0 | $0 | 4 |
| 54 | Perkins | A | 10 | 0 | $0 | 5 |
| 55 | Ziebach | A | 10 | 0 | $0 | 5 |
| 56 | Bennett | A | 10 | 0 | $0 | 5 |
| 57 | Campbell | A | 10 | 0 | $0 | 5 |
| 58 | Custer | A | 10 | 0 | $0 | 5 |
| 59 | Fall River | A | 10 | 0 | $0 | 4 |
| 60 | Haakon | A | 10 | 0 | $0 | 4 |
| 61 | Jones | A | 10 | 0 | $0 | 5 |
| 62 | Mellette | A | 10 | 0 | $0 | 5 |
| 63 | Todd | A | 10 | 0 | $0 | 5 |
| 64 | Stanley | A | 10 | 0 | $0 | 4 |
| 65 | Corson | A | 9 | 0 | $0 | 3 |
| 66 | Oglala Lakota | A | 9 | 0 | $0 | 3 |
| 67 | Harding | A | 9 | 0 | $0 | 3 |