Colorado wildfire risk
Jefferson County has the highest wildfire risk in Colorado, scoring 99.5 out of 100 — rated "Relatively High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Jefferson County | 99.5 | Relatively High | 0 |
| 2 | El Paso County | 99.3 | Relatively High | 0 |
| 3 | Douglas County | 98.4 | Relatively High | 0 |
| 4 | Boulder County | 97.9 | Relatively High | 0 |
| 5 | Larimer County | 97.7 | Relatively High | 0 |
| 6 | La Plata County | 97.6 | Relatively Moderate | 0 |
| 7 | Teller County | 97 | Relatively Moderate | 0 |
| 8 | Elbert County | 95.1 | Relatively Moderate | 0 |
| 9 | Park County | 94.9 | Relatively Moderate | 0 |
| 10 | Archuleta County | 94.5 | Relatively Moderate | 0 |
| 11 | Fremont County | 94.2 | Relatively Moderate | 0 |
| 12 | Clear Creek County | 94 | Relatively Moderate | 0 |
| 13 | Montezuma County | 93.6 | Relatively Moderate | 0 |
| 14 | Pueblo County | 92.7 | Relatively Moderate | 0 |
| 15 | Las Animas County | 91.8 | Relatively Moderate | 0 |
| 16 | Rio Blanco County | 91.6 | Relatively Moderate | 0 |
| 17 | Garfield County | 91 | Relatively Moderate | 0 |
| 18 | Mesa County | 89.9 | Relatively Moderate | 0 |
| 19 | Weld County | 87.7 | Relatively Low | 0 |
| 20 | Huerfano County | 87.6 | Relatively Low | 0 |
| 21 | Gilpin County | 87.5 | Relatively Low | 0 |
| 22 | Moffat County | 87.5 | Relatively Low | 0 |
| 23 | Delta County | 86.7 | Relatively Low | 0 |
| 24 | Arapahoe County | 84.7 | Relatively Low | 0 |
| 25 | Custer County | 81.6 | Relatively Low | 0 |
| 26 | Adams County | 80.9 | Relatively Low | 0 |
| 27 | Baca County | 80.8 | Relatively Low | 0 |
| 28 | Routt County | 80.5 | Relatively Low | 0 |
| 29 | San Miguel County | 80.1 | Relatively Low | 0 |
| 30 | Dolores County | 79.8 | Relatively Low | 0 |
| 31 | Prowers County | 79.2 | Relatively Low | 0 |
| 32 | Montrose County | 78.6 | Relatively Low | 0 |
| 33 | Grand County | 78.5 | Relatively Low | 0 |
| 34 | Pitkin County | 76.6 | Relatively Low | 0 |
| 35 | Otero County | 75.9 | Relatively Low | 0 |
| 36 | Eagle County | 75.5 | Relatively Low | 0 |
| 37 | Costilla County | 73.1 | Relatively Low | 0 |
| 38 | Broomfield County | 72.4 | Relatively Low | 0 |
| 39 | Ouray County | 71.9 | Relatively Low | 0 |
| 40 | Chaffee County | 71.7 | Relatively Low | 0 |
| 41 | Gunnison County | 70.2 | Relatively Low | 0 |
| 42 | Morgan County | 65.2 | Relatively Low | 0 |
| 43 | Bent County | 64.7 | Relatively Low | 0 |
| 44 | Saguache County | 64.1 | Relatively Low | 0 |
| 45 | Logan County | 63.6 | Relatively Low | 0 |
| 46 | Rio Grande County | 63.6 | Relatively Low | 0 |
| 47 | Crowley County | 62.7 | Very Low | 0 |
| 48 | Alamosa County | 62.3 | Very Low | 0 |
| 49 | Denver County | 60.6 | Very Low | 0 |
| 50 | Washington County | 60.5 | Very Low | 0 |
| 51 | Yuma County | 60.2 | Very Low | 0 |
| 52 | Lincoln County | 58.4 | Very Low | 0 |
| 53 | Conejos County | 58.3 | Very Low | 0 |
| 54 | Summit County | 53.6 | Very Low | 0 |
| 55 | Kiowa County | 51.2 | Very Low | 0 |
| 56 | Hinsdale County | 50.2 | Very Low | 0 |
| 57 | Mineral County | 45.8 | Very Low | 0 |
| 58 | Kit Carson County | 42.4 | Very Low | 0 |
| 59 | Sedgwick County | 34.1 | Very Low | 0 |
| 60 | San Juan County | 33.6 | Very Low | 0 |
| 61 | Phillips County | 31.5 | Very Low | 0 |
| 62 | Cheyenne County | 30.4 | Very Low | 0 |
| 63 | Jackson County | 24 | Very Low | 0 |
| 64 | Lake County | 23.4 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Wildfire risk nationally:
Other hazard risks in Colorado:
Frequently asked questions
What is the highest wildfire risk county in Colorado?
Jefferson County, CO has the highest wildfire risk in Colorado, with a FEMA National Risk Index score of 99.5 out of 100 (rated "Relatively High").
What causes wildfire risk in Colorado?
Wildfire risk reflects expected annual losses to buildings, population, and agriculture from wildfire, adjusted for social vulnerability and community resilience. High scores cluster in the western US, where dry climate, fuel loads, and seasonal wind patterns combine with rapid suburban development into fire-prone terrain.