In 2025, fire departments serving Montgomery County responded to 4,130 fire and hazmat incidents — including a single $1.0M property loss.
Gas leak (natural gas or LPG) lead by count. Top five categories make up about 65% of all calls.
Jul peaks. Sep dips.
20,244 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 3,599 | |
| 2022 | 4,082 | |
| 2023 | 4,228 | |
| 2024 | 4,205 | |
| 2025 | 4,130 |
For the 205 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Montgomery County during 2025. These 10 fires alone account for 34% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | GAITHERSBURG | Building fires | Major |
| 2 | $600,000 | SILVER SPRING | Building fires | Major |
| 3 | $600,000 | GAITHERSBURG | Building fires | Major |
| 4 | $600,000 | GERMANTOWN | Building fires | Major |
| 5 | $500,000 | BETHESDA | Building fires | Major |
| 6 | $500,000 | BROOKEVILLE | Building fires | Major |
| 7 | $500,000 | ROCKVILLE | Building fires | Major |
| 8 | $500,000 | SILVER SPRING | Building fires | Major |
| 9 | $420,000 | SILVER SPRING | Building fires | Major |
| 10 | $400,000 | GAITHERSBURG | Building fires | Major |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 24031.
| City | Population | |
|---|---|---|
| Germantown | 90,210 | View › |
| Silver Spring | 81,808 | View › |
| Gaithersburg | 69,016 | View › |
| Rockville | 67,142 | View › |
| Bethesda | 66,316 | View › |
| Aspen Hill | 54,262 | View › |
| Wheaton | 52,775 | View › |
| North Bethesda | 49,763 | View › |
| Potomac | 46,499 | View › |
| Olney | 35,522 | View › |
| Montgomery Village | 34,748 | View › |
| Clarksburg | 28,337 | View › |
1 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 | MDBWR-FY19-RX-Mill Ditch | 2019 | FWS | 974 |
| 2 | MDMDS-FY19-RX-Thorofare | 2019 | State | 428 |
| 3 | MDMDFN-FY19-RX-Nassawango 87-88 | 2019 | PRI | 205 |
| 4 | MDBWR-FY19-RX-Shorters Wharf East | 2019 | FWS | 125 |
| 5 | MDBWR-FY19-RX-Unit F2 | 2019 | FWS | 113 |
| 6 | MDBWR-FY19-RX-Wolf Pit | 2019 | FWS | 111 |
| 7 | MDMDS-FY19-RX-Marshy Hope 1-1 | 2019 | State | 80 |
| 8 | MDBWR-FY19-RX-McGraws Island | 2019 | FWS | 77 |
| 9 | Otto Farm Rx | 2021 | NPS | 62 |
| 10 | MDPWR-FY19-RX-NT7 Range 1 | 2019 | FWS | 60 |
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.