Wyoming wildfire risk
Wyoming is among the ten highest wildfire-hazard states in the country by FEMA's National Risk Index. This page covers what is burning right now, how hazard is distributed across the state, and what a high band does to your ability to buy homeowners insurance.
Active fires in Wyoming
Wyoming's recorded fire history
Federal perimeter records list 1,337 mapped wildfires in Wyoming since 2000. The largest on that record is the Arapaho Fire of 2012, which burned 98,037 acres.
| Fire | Year | Area burned |
|---|---|---|
| Arapaho Fire | 2012 | 98,037 acres |
| Deer Creek Fire | 2017 | 90,957 acres |
| Fontenelle Fire | 2012 | 64,220 acres |
| Roosevelt Fire | 2018 | 61,522 acres |
Recorded history feeds directly into your address score: our model counts mapped burns within 25 miles of a parcel, weighted toward large ones. It is worth knowing the limitation, though — a long record of successful suppression can leave an area reading quiet while fuel accumulates, which is precisely the condition that produces the next large fire.
Where hazard concentrates in Wyoming
Wildfire hazard is not spread evenly across a state. These are the 5 counties in Wyoming with the highest wildfire risk scores in FEMA's National Risk Index, with the building value each has sitting in exposed areas.
| County | Hazard score | Building exposure |
|---|---|---|
| Sheridan County | 93.9 | $1.7B |
| Natrona County | 93.0 | $3.7B |
| Campbell County | 92.9 | $3.1B |
| Fremont County | 92.6 | $2.6B |
| Laramie County | 91.9 | $3.4B |
Sheridan County carries the highest score in the state at 93.9. If your address is there, or in any of the counties above, the statewide average understates your situation considerably — which is the reason to check the parcel rather than the state.
How Wyoming ranks nationally
FEMA's National Risk Index scores every US county for expected annual wildfire loss. Across Wyoming's 23 assessed counties the average wildfire hazard score is 83.0, which places the state 8th of the 50 states. The most exposed county in Wyoming scores 93.9.
Against a 50-state average of 52.7, Wyoming sits 30.3 points above it. Rank 8 of 50. The National Risk Index blends how often wildfire is expected with how much is standing in the way, so a state can post a moderate score with severe local hazard wherever development has pushed into the wildland-urban interface.
Roughly $34.9B of building value sits inside Wyoming's wildfire-exposed areas. That figure is what drives carrier behaviour: insurers manage concentration of exposure, so a state can have modest average hazard and still see availability problems wherever that value clusters in the wildland-urban interface.
Wyoming wildfire season
Wyoming's fire season typically runs from late spring through to the first autumn precipitation, peaking in July and August. Snowpack and spring moisture set the tone for the year — a dry winter usually means an early and long season.
Insurance in Wyoming
Wyoming does not operate a FAIR Plan in the way the western fire states do, which in practice means the surplus lines market is the fallback for a parcel the admitted market declines. An independent broker is more useful here than a captive agent, because only they can access those carriers.
Residual-market availability and the rules governing it change. Confirm the current position with the Wyoming Department of Insurance before you rely on it.
Whatever the market looks like in your area, the sequence is the same: document mitigation before your renewal date, work with an independent broker who can access surplus lines, and ask directly whether the carrier credits wildfire mitigation. The full fire insurance guide covers non-renewal, FAIR Plans and difference-in-conditions wraps in detail.
Lowering your risk in Wyoming
The two changes with the best return anywhere in the country are clearing the first five feet around the structure to non-combustible material, and screening vents against ember entry. Both are cheap, both address the mechanism that destroys most homes, and both are visible to an underwriter if you photograph and invoice them. What qualifies and how to document it.