Montana Natural Disaster Risk by County
FEMA National Risk Index rankings for all 56 counties
Montana spans 56 counties with an average FEMA National Risk Index score of 33.3 (low risk) and roughly $792M in combined expected annual loss statewide. No county in the state reaches the High risk band.
Topping the rankings is Flathead County (score 86.5, medium), while Treasure County (score 0.5) carries the lowest. Use the table below to compare every county by score, top hazard, and expected annual loss.
County Rankings
| # | County | Risk Score | Risk Rating | Top Hazard | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Flathead County | Medium | Avalanche | $75M | |
| 2 | Yellowstone County | Medium | Winter Weather | $60M | |
| 3 | Cascade County | Medium | Winter Weather | $55M | |
| 4 | Gallatin County | Medium | Winter Weather | $66M | |
| 5 | Ravalli County | Low | Wildfire | $37M | |
| 6 | Missoula County | Low | Wildfire | $57M | |
| 7 | Lewis and Clark County | Low | Winter Weather | $35M | |
| 8 | Lake County | Low | Winter Weather | $23M | |
| 9 | Park County | Low | Avalanche | $28M | |
| 10 | Lincoln County | Low | Wildfire | $16M | |
| 11 | Dawson County | Low | Cold Wave | $21M | |
| 12 | Carbon County | Low | Landslide | $16M | |
| 13 | Big Horn County | Low | Strong Wind | $11M | |
| 14 | Roosevelt County | Low | Cold Wave | $10M | |
| 15 | Richland County | Low | Cold Wave | $23M | |
| 16 | Glacier County | Low | Cold Wave | $10M | |
| 17 | Hill County | Low | Cold Wave | $13M | |
| 18 | Rosebud County | Low | Wildfire | $9M | |
| 19 | Sanders County | Low | Landslide | $9M | |
| 20 | Blaine County | Low | Cold Wave | $9M | |
| 21 | Fergus County | Low | Cold Wave | $14M | |
| 22 | Beaverhead County | Low | Avalanche | $10M | |
| 23 | Custer County | Very Low | Cold Wave | $10M | |
| 24 | Madison County | Very Low | Avalanche | $15M | |
| 25 | Chouteau County | Very Low | Avalanche | $10M | |
| 26 | Silver Bow County | Very Low | Winter Weather | $14M | |
| 27 | Valley County | Very Low | Hail | $11M | |
| 28 | Phillips County | Very Low | Cold Wave | $8M | |
| 29 | Pondera County | Very Low | Cold Wave | $5M | |
| 30 | Jefferson County | Very Low | Landslide | $9M | |
| 31 | Teton County | Very Low | Avalanche | $8M | |
| 32 | Broadwater County | Very Low | Landslide | $6M | |
| 33 | Deer Lodge County | Very Low | Avalanche | $6M | |
| 34 | Musselshell County | Very Low | Wildfire | $5M | |
| 35 | Stillwater County | Very Low | Wildfire | $9M | |
| 36 | Sheridan County | Very Low | Cold Wave | $5M | |
| 37 | Toole County | Very Low | Cold Wave | $4M | |
| 38 | Wibaux County | Very Low | Cold Wave | $7M | |
| 39 | Powell County | Very Low | Landslide | $4M | |
| 40 | Granite County | Very Low | Landslide | $4M | |
| 41 | Sweet Grass County | Very Low | Wildfire | $6M | |
| 42 | Mineral County | Very Low | Landslide | $3M | |
| 43 | Liberty County | Very Low | Cold Wave | $3M | |
| 44 | Judith Basin County | Very Low | Wildfire | $3M | |
| 45 | Fallon County | Very Low | Cold Wave | $4M | |
| 46 | McCone County | Very Low | Cold Wave | $3M | |
| 47 | Prairie County | Very Low | Cold Wave | $2M | |
| 48 | Powder River County | Very Low | Wildfire | $3M | |
| 49 | Wheatland County | Very Low | Wildfire | $2M | |
| 50 | Meagher County | Very Low | Landslide | $2M | |
| 51 | Garfield County | Very Low | Wildfire | $3M | |
| 52 | Daniels County | Very Low | Cold Wave | $2M | |
| 53 | Carter County | Very Low | Wildfire | $2M | |
| 54 | Petroleum County | Very Low | Lightning | $2M | |
| 55 | Golden Valley County | Very Low | Wildfire | $1M | |
| 56 | Treasure County | Very Low | Wildfire | $1M |
All 56 Montana counties, ranked by FEMA National Risk Index score.
Frequently Asked Questions
Which Montana county has the highest natural disaster risk?
Flathead County has the highest FEMA National Risk Index score in Montana at 86.5 (Medium), driven largely by avalanche.
What is the average natural disaster risk in Montana?
Montana counties average a National Risk Index score of 33.3 across 56 counties, with 0 rated High or Very High risk.
How much are expected annual losses across Montana?
FEMA estimates roughly $792M in combined expected annual loss from natural hazards across all Montana counties.