In 2025, fire departments serving Mariposa County responded to 190 fire and hazmat incidents — including a single $500K property loss. FEMA NRI rates wildfire risk here as Very High.
Grass fire lead by count. Top five categories make up about 46% of all calls.
May peaks. Apr dips.
1,073 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 220 | |
| 2022 | 245 | |
| 2023 | 222 | |
| 2024 | 196 | |
| 2025 | 190 |
For the 13 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Mariposa County during 2025. These 10 fires alone account for 86% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Bootjack | Building fires | Major |
| 2 | $500,000 | SIERRANATIONALFORE | Building fires | Major |
| 3 | $450,000 | DONPEDRO | Brush, or brush and grass mixture fire | Major |
| 4 | $350,000 | Mariposa | Building fires | Major |
| 5 | $350,000 | BEARVALLEY | Natural vegetation fire, other | Major |
| 6 | $300,000 | MORMONBAR | Natural vegetation fire, other | Major |
| 7 | $90,000 | Bootjack | Fire in motor home, camper, recreational vehicle | Significant |
| 8 | $71,000 | DONPEDRO | Building fires | Significant |
| 9 | $60,000 | Coulterville | Passenger vehicle fire | Significant |
| 10 | $56,250 | MORMONBAR | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 06043.
| City | Population | |
|---|---|---|
| Yosemite Valley | 1,737 | View › |
| Lake Don Pedro | 1,215 | View › |
| Mariposa | 1,060 | View › |
| Greeley Hill | 960 | View › |
| Catheys Valley | 723 | View › |
| El Portal | 479 | View › |
| Bootjack | 337 | View › |
| Midpines | 183 | View › |
| Wawona | 122 | View › |
| Mount Bullion | 80 | View › |
| Foresta | 75 | View › |
| Bear Valley | 71 | View › |
3 departments report from this county.
Top 10 fire perimeters by acres burned (state-scoped fallback while we build out per-county polygons).
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.