ZIP 20854 recorded 167 fire and hazmat incidents in 2025, 840 across 2021–2025. Primary county: Montgomery County, MD.
840 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 170 | |
| 2022 | 140 | |
| 2023 | 160 | |
| 2024 | 203 | |
| 2025 | 167 |
Jun peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20854 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 256 | 30.5% | |
| 2 | Hazardous condition, other | 114 | 13.6% | |
| 3 | Power line down | 108 | 12.9% | |
| 4 | Carbon monoxide incident | 58 | 6.9% | |
| 5 | Electrical wiring/equipment problem, other | 54 | 6.4% |
For the 9 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20854 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 18 | 13.6% | |
| 2 | Cooking area, kitchen | 17 | 12.9% | |
| 3 | Engine area, running gear, wheel area | 17 | 12.9% | |
| 4 | Other | 14 | 10.6% | |
| 5 | Wildland, woods | 6 | 4.5% | |
| 6 | Function area, other | 5 | 3.8% | |
| 7 | Vehicle storage area; garage, carport | 5 | 3.8% | |
| 8 | Open area - outside; included are farmland, field | 5 | 3.8% | |
| 9 | All other areas | 45 | 34.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 41 | 31.1% | |
| 2 | Heat from powered equipment, other | 15 | 11.4% | |
| 3 | Radiated, conducted heat from operating equipment | 14 | 10.6% | |
| 4 | Arcing | 11 | 8.3% | |
| 5 | Hot or smoldering object, other | 8 | 6.1% | |
| 6 | Hot ember or ash | 8 | 6.1% | |
| 7 | Heat source: other | 5 | 3.8% | |
| 8 | Spark, ember or flame from operating equipment | 5 | 3.8% | |
| 9 | All other sources | 25 | 18.9% |
Largest single-incident losses in ZIP 20854 across 2021–2025. These 8 fires alone account for 1059% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,500,000 | Building fires | 2023 | Major |
| 2 | $2,000,000 | Outside rubbish fire, other | 2023 | Major |
| 3 | $600,000 | Building fires | 2023 | Major |
| 4 | $500,000 | Building fires | 2021 | Major |
| 5 | $300,000 | Building fires | 2023 | Major |
| 6 | $300,000 | Building fires | 2025 | Major |
| 7 | $250,000 | Building fires | 2023 | Major |
| 8 | $200,000 | Building fires | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20854.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Potomac | 820 | |
| 2 | Rockville | 7 | |
| 3 | Bethesda | 6 | |
| 4 | Silver Spring | 3 | |
| 5 | Gaithersburg | 2 |
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 — 840 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.