Lowest counties for flood risk in Montana
Top 25 of 56 counties with data.
Ranked by flood risk (FEMA National Risk Index, 2024), lowest first.
| Rank | County | Value |
|---|---|---|
| 1 | Silver Bow | 26.0 |
| 2 | Petroleum | 35.4 |
| 3 | Gallatin | 37.5 |
| 4 | Deer Lodge | 38.7 |
| 5 | Missoula | 47.1 |
| 6 | Ravalli | 48.1 |
| 7 | Lewis and Clark | 50.5 |
| 8 | Treasure | 53.5 |
| 9 | Custer | 53.9 |
| 10 | Daniels | 55.3 |
| 11 | Hill | 58.1 |
| 12 | Flathead | 58.1 |
| 13 | Richland | 59.1 |
| 14 | Yellowstone | 60.9 |
| 15 | Cascade | 63.1 |
| 16 | Musselshell | 64.2 |
| 17 | Granite | 64.6 |
| 18 | Lake | 64.8 |
| 19 | Wibaux | 65.9 |
| 20 | Prairie | 68.8 |
| 21 | Roosevelt | 69.4 |
| 22 | Fergus | 70.2 |
| 23 | Golden Valley | 70.5 |
| 24 | Carter | 70.7 |
| 25 | Blaine | 71.4 |
How this ranking works
This page ranks Montana counties by flood risk, sorted so the lowest places appear first. Click any county to see its housing, schools, crime, and demographics in detail.
For flood risk, a lower value is generally more favorable, so the top of the list is the lowest. Want to weigh flood risk against schools, taxes, commute, and more at once? Use the live map to build a custom match.
Data comes from public sources. Source attribution and the exact data vintage are shown above and on the full map of flood risk.