In 2025, fire departments serving McHenry County responded to 2,279 fire and hazmat incidents — including a single $400K property loss.
Gas leak (natural gas or LPG) lead by count. Top five categories make up about 62% of all calls.
Aug peaks. Feb dips.
11,283 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 2,109 | |
| 2022 | 2,111 | |
| 2023 | 2,588 | |
| 2024 | 2,196 | |
| 2025 | 2,279 |
For the 344 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in McHenry County during 2025. These 10 fires alone account for 40% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $400,000 | WOODSTOCK | Building fires | Major |
| 2 | $350,000 | ALGONQUIN | Building fires | Major |
| 3 | $325,000 | ALGONQUIN | Building fires | Major |
| 4 | $325,000 | SPRING GROVE | Building fires | Major |
| 5 | $300,000 | LAKE IN THE HILLS | Building fires | Major |
| 6 | $300,000 | WONDER LAKE | Building fires | Major |
| 7 | $250,000 | MCHENRY | Building fires | Major |
| 8 | $245,000 | MCHENRY | Building fires | Significant |
| 9 | $220,000 | JOHNSBURG | Building fires | Significant |
| 10 | $200,000 | LAKE IN THE HILLS | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 17111.
16 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 | Red Shale RX | 2024 | FWS | 1,290 |
| 2 | Herrin Flats RX | 2024 | FWS | 1,134 |
| 3 | Beach RX | 2024 | FWS | 864 |
| 4 | Hampton North RX | 2024 | FWS | 708 |
| 5 | Hampton RX | 2024 | FWS | 668 |
| 6 | Grassy Creek 2 RX | 2024 | FWS | 621 |
| 7 | Chamness RX | 2024 | FWS | 610 |
| 8 | Greenbriar RX | 2024 | FWS | 590 |
| 9 | COR - Devils Kitchen West RX | 2024 | FWS | 468 |
| 10 | Smith RX | 2024 | FWS | 366 |
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.