Updated April 2026
Flood Risk in Idaho
Idaho has 45 counties with flood risk data, 19 total NFIP flood insurance claims, and an average risk score of 9 out of 100.
45
Counties
19
NFIP Claims
$179,345
Total Payouts
9
Avg Risk Score
Grade Distribution
A
45
counties
B
0
counties
C
0
counties
D
0
counties
F
0
counties
Riskiest in Idaho
| County | Grade | Score |
|---|---|---|
| Nez Perce Indian Reservation | A | 12 |
| Idaho | A | 11 |
| Latah | A | 11 |
| Shoshone | A | 11 |
| Lewis | A | 10 |
All 45 Counties in Idaho
Sorted by flood risk score, highest to lowest.
| # | County | Grade | Score | Claims | Payouts | Disasters |
|---|---|---|---|---|---|---|
| 1 | Nez Perce Indian Reservation | A | 12 | 0 | $0 | 8 |
| 2 | Idaho | A | 11 | 0 | $0 | 6 |
| 3 | Latah | A | 11 | 1 | $6,601 | 6 |
| 4 | Shoshone | A | 11 | 0 | $0 | 7 |
| 5 | Lewis | A | 10 | 0 | $0 | 4 |
| 6 | Elmore | A | 10 | 1 | $0 | 4 |
| 7 | Gooding | A | 10 | 0 | $0 | 4 |
| 8 | Benewah | A | 10 | 0 | $0 | 4 |
| 9 | Bonner | A | 10 | 1 | $0 | 4 |
| 10 | Clearwater | A | 10 | 0 | $0 | 5 |
| 11 | Kootenai | A | 10 | 0 | $0 | 5 |
| 12 | Washington | A | 10 | 1 | $4,903 | 4 |
| 13 | Nez Perce | A | 10 | 0 | $0 | 4 |
| 14 | Adams | A | 9 | 0 | $0 | 3 |
| 15 | Valley | A | 9 | 0 | $0 | 3 |
| 16 | Ada | A | 9 | 4 | $20,922 | 3 |
| 17 | Canyon | A | 9 | 1 | $1,107 | 2 |
| 18 | Blaine | A | 9 | 8 | $114,874 | 3 |
| 19 | Camas | A | 9 | 0 | $0 | 3 |
| 20 | Custer | A | 9 | 0 | $0 | 2 |
| 21 | Boundary | A | 9 | 0 | $0 | 3 |
| 22 | Bingham | A | 9 | 0 | $0 | 3 |
| 23 | Cassia | A | 9 | 0 | $0 | 3 |
| 24 | Franklin | A | 9 | 0 | $0 | 2 |
| 25 | Jefferson | A | 9 | 0 | $0 | 3 |
| 26 | Jerome | A | 9 | 0 | $0 | 3 |
| 27 | Lincoln | A | 9 | 0 | $0 | 3 |
| 28 | Minidoka | A | 9 | 0 | $0 | 3 |
| 29 | Twin Falls | A | 9 | 0 | $0 | 2 |
| 30 | Bannock | A | 9 | 1 | $2,690 | 2 |
| 31 | Boise | A | 9 | 0 | $0 | 2 |
| 32 | Bonneville | A | 9 | 0 | $0 | 3 |
| 33 | Butte | A | 9 | 0 | $0 | 2 |
| 34 | Caribou | A | 9 | 0 | $0 | 2 |
| 35 | Fremont | A | 9 | 0 | $0 | 2 |
| 36 | Gem | A | 9 | 0 | $0 | 2 |
| 37 | Madison | A | 9 | 0 | $0 | 2 |
| 38 | Owyhee | A | 9 | 0 | $0 | 2 |
| 39 | Payette | A | 9 | 0 | $0 | 2 |
| 40 | Power | A | 9 | 0 | $0 | 2 |
| 41 | Bear Lake | A | 8 | 0 | $0 | 1 |
| 42 | Clark | A | 8 | 0 | $0 | 1 |
| 43 | Lemhi | A | 8 | 1 | $28,248 | 1 |
| 44 | Oneida | A | 8 | 0 | $0 | 1 |
| 45 | Teton | A | 8 | 0 | $0 | 1 |