In 2025, fire departments serving Lassen County responded to 461 fire and hazmat incidents — including a single $3.6M property loss. FEMA NRI rates wildfire risk here as Very High.
Forest, woods or wildland fire lead by count. Top five categories make up about 52% of all calls.
Aug peaks. Mar dips.
1,841 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 398 | |
| 2022 | 340 | |
| 2023 | 300 | |
| 2024 | 342 | |
| 2025 | 461 |
For the 44 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Lassen County during 2025. These 10 fires alone account for 96% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $3,600,000 | Janesville | Building fires | Major |
| 2 | $3,000,000 | Spalding | Building fires | Major |
| 3 | $164,000 | Susanville | Fires in structures other than in a building | Significant |
| 4 | $120,000 | Janesville | Passenger vehicle fire | Significant |
| 5 | $100,000 | OLDSTA | Road freight or transport vehicle fire | Significant |
| 6 | $80,000 | Susanville | Building fires | Significant |
| 7 | $75,000 | Susanville | Building fires | Significant |
| 8 | $75,000 | Susanville | Building fires | Significant |
| 9 | $70,000 | Janesville | Building fires | Significant |
| 10 | $70,000 | Janesville | Road freight or transport vehicle fire | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 06035.
| City | Population | |
|---|---|---|
| Susanville | 15,737 | View › |
| Janesville | 2,641 | View › |
| Herlong | 1,280 | View › |
| Westwood | 1,116 | View › |
| Johnstonville | 1,090 | View › |
| Doyle | 998 | View › |
| Patton Village | 792 | View › |
| Clear Creek | 307 | View › |
| Spaulding | 233 | View › |
| Bieber | 151 | View › |
| Stones Landing | 144 | View › |
| Litchfield | 134 | View › |
8 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.