In 2025, fire departments serving Tuolumne County responded to 537 fire and hazmat incidents — including a single $500K property loss. FEMA NRI rates wildfire risk here as Very High.
Aircraft standby lead by count. Top five categories make up about 49% of all calls.
May peaks. Mar dips.
3,344 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 836 | |
| 2022 | 605 | |
| 2023 | 725 | |
| 2024 | 641 | |
| 2025 | 537 |
For the 31 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Tuolumne County during 2025. These 10 fires alone account for 85% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Groveland | Building fires | Major |
| 2 | $410,000 | GREENSPRINGS | Grass fire | Major |
| 3 | $395,000 | TWAINHARTE | Building fires | Major |
| 4 | $274,500 | Jamestown | Building fires | Major |
| 5 | $200,000 | PHOENIXLAKE | Building fires | Significant |
| 6 | $150,000 | Jamestown | Building fires | Significant |
| 7 | $150,000 | Rawhide | Building fires | Significant |
| 8 | $149,000 | TWAINHARTE | Building fires | Significant |
| 9 | $100,000 | Standard | Road freight or transport vehicle fire | Significant |
| 10 | $50,000 | Groveland | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 06109.
| City | Population | |
|---|---|---|
| Sonora | 4,963 | View › |
| Phoenix Lake | 4,377 | View › |
| Jamestown | 3,742 | View › |
| Mono Vista | 3,620 | View › |
| Pine Mountain Lake | 3,038 | View › |
| East Sonora | 2,664 | View › |
| Columbia | 2,439 | View › |
| Twain Harte | 2,154 | View › |
| Soulsbyville | 1,972 | View › |
| Cedar Ridge | 1,650 | View › |
| Tuolumne City | 1,297 | View › |
| Mi-Wuk Village | 1,010 | View › |
11 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.