In 2025, fire departments serving Natrona County responded to 529 fire and hazmat incidents — including a single $80K property loss. FEMA NRI rates wildfire risk here as Very High.
Gas leak (natural gas or LPG) lead by count. Top five categories make up about 51% of all calls.
Jul peaks. Oct dips.
3,168 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 737 | |
| 2022 | 693 | |
| 2023 | 641 | |
| 2024 | 568 | |
| 2025 | 529 |
For the 69 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Natrona County during 2025. These 10 fires alone account for 91% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $80,000 | Casper | Passenger vehicle fire | Significant |
| 2 | $50,000 | Casper | Building fires | Significant |
| 3 | $50,000 | Casper | Building fires | Significant |
| 4 | $50,000 | Casper | Building fires | Significant |
| 5 | $50,000 | Casper | Building fires | Significant |
| 6 | $40,000 | Casper | Passenger vehicle fire | Significant |
| 7 | $25,000 | Casper | Building fires | Significant |
| 8 | $12,000 | Casper | Off-road vehicle or heavy equipment fire | Significant |
| 9 | $12,000 | Natrona County | Passenger vehicle fire | Significant |
| 10 | $10,000 | Casper | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 56025.
| City | Population | |
|---|---|---|
| Casper | 58,631 | View › |
| Mills | 4,218 | View › |
| Bar Nunn | 2,945 | View › |
| Evansville | 2,755 | View › |
| Hartrandt | 903 | View › |
| Vista West | 817 | View › |
| Red Butte | 758 | View › |
| Casper Mountain | 671 | View › |
| Midwest | 205 | View › |
| Homa Hills | 202 | View › |
| Bessemer Bend | 118 | View › |
| Edgerton | 116 | View › |
7 departments report from this county.
Top 10 fire perimeters by acres burned (state-scoped fallback while we build out per-county polygons).
| # | Name | Year | Agency | Acres |
|---|---|---|---|---|
| 1 | Clover Mist | 1988 | USFS | 341,291 |
| 2 | CLOVERMIST | 1988 | NPS | 232,190 |
| 3 | Hellroaring | 1988 | USFS | 206,358 |
| 4 | Storm Creek | 1988 | USFS | 206,056 |
| 5 | East Troublesome | 2020 | USFS | 193,693 |
| 6 | Mullen | 2020 | USFS | 176,787 |
| 7 | HUCK | 1988 | NPS | 120,297 |
| 8 | Elk | 2024 | USFS | 98,351 |
| 9 | Pack Trail | 2024 | USFS | 89,929 |
| 10 | MINK | 1988 | NPS | 88,369 |
County-level NFIRS aggregates for 2025, plus 5-year totals across 2021–2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Wildfire risk score (0–100) and Expected Annual Loss come from FEMA's National Risk Index. Drought class is the most recent USDM classification (D0 = abnormally dry through D4 = exceptional drought). Historical fire perimeters are sourced from the NIFC InterAgency Fire Perimeter History.