ZIP 20871 recorded 103 fire and hazmat incidents in 2025, 459 across 2021–2025. Primary county: Montgomery County, MD.
459 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 82 | |
| 2022 | 83 | |
| 2023 | 104 | |
| 2024 | 87 | |
| 2025 | 103 |
Aug peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20871 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 142 | 30.9% | |
| 2 | Carbon monoxide incident | 45 | 9.8% | |
| 3 | Power line down | 37 | 8.1% | |
| 4 | Hazardous condition, other | 34 | 7.4% | |
| 5 | Building fires | 22 | 4.8% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20871 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 17 | 16.3% | |
| 2 | Cooking area, kitchen | 15 | 14.4% | |
| 3 | Outside area, other | 15 | 14.4% | |
| 4 | Undetermined | 8 | 7.7% | |
| 5 | Other | 7 | 6.7% | |
| 6 | Wildland, woods | 6 | 5.8% | |
| 7 | Open area - outside; included are farmland, field | 5 | 4.8% | |
| 8 | Vehicle storage area; garage, carport | 4 | 3.8% | |
| 9 | All other areas | 27 | 26.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 43 | 41.3% | |
| 2 | Hot ember or ash | 10 | 9.6% | |
| 3 | Heat source: other | 9 | 8.7% | |
| 4 | Heat from powered equipment, other | 9 | 8.7% | |
| 5 | Spark, ember or flame from operating equipment | 5 | 4.8% | |
| 6 | Hot or smoldering object, other | 5 | 4.8% | |
| 7 | Cigarette | 5 | 4.8% | |
| 8 | Arcing | 4 | 3.8% | |
| 9 | All other sources | 14 | 13.5% |
Largest single-incident losses in ZIP 20871 across 2021–2025. These 8 fires alone account for 894% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | 2023 | Major |
| 2 | $350,000 | Building fires | 2023 | Major |
| 3 | $100,000 | Building fires | 2022 | Significant |
| 4 | $75,000 | Building fires | 2025 | Significant |
| 5 | $60,000 | Passenger vehicle fire | 2021 | Significant |
| 6 | $60,000 | Building fires | 2023 | Significant |
| 7 | $50,000 | Mobile property (vehicle) fire, other | 2024 | Significant |
| 8 | $30,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20871.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Clarksburg | 433 | |
| 2 | Damascus | 5 | |
| 3 | Rockville | 3 | |
| 4 | Gaithersburg | 2 | |
| 5 | Bethesda | 1 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 459 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.