In 2025, fire departments serving Sonoma County responded to 3,416 fire and hazmat incidents — including a single $931K property loss. FEMA NRI rates wildfire risk here as Very High.
Hazardous condition, other lead by count. Top five categories make up about 49% of all calls.
Dec peaks. Apr dips.
18,119 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 3,497 | |
| 2022 | 3,695 | |
| 2023 | 3,605 | |
| 2024 | 3,906 | |
| 2025 | 3,416 |
For the 247 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Sonoma County during 2025. These 10 fires alone account for 38% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $931,000 | City of Petaluma | Building fires | Major |
| 2 | $454,500 | City of Petaluma | Building fires | Major |
| 3 | $403,000 | City of Petaluma | Building fires | Major |
| 4 | $400,000 | City of Santa Rosa | Brush, or brush and grass mixture fire | Major |
| 5 | $400,000 | Roseland Census Desi | Building fires | Major |
| 6 | $300,000 | Healdsburg | Building fires | Major |
| 7 | $300,000 | Penngrove | Building fires | Major |
| 8 | $221,250 | City of Petaluma | Building fires | Significant |
| 9 | $200,000 | Healdsburg | Building fires | Significant |
| 10 | $200,000 | Sebastopol | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 06097.
| City | Population | |
|---|---|---|
| Santa Rosa | 178,221 | View › |
| Petaluma | 59,682 | View › |
| Rohnert Park | 44,461 | View › |
| Windsor | 26,320 | View › |
| Healdsburg | 11,481 | View › |
| Sonoma | 10,702 | View › |
| Cloverdale | 8,964 | View › |
| Larkfield-Wikiup | 7,688 | View › |
| Cotati | 7,545 | View › |
| Sebastopol | 7,503 | View › |
| Boyes Hot Springs | 7,374 | View › |
| Guerneville | 4,764 | View › |
22 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.