ZIP 20905 recorded 57 fire and hazmat incidents in 2025, 276 across 2021–2025. Primary county: Montgomery County, MD.
276 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 45 | |
| 2022 | 58 | |
| 2023 | 55 | |
| 2024 | 61 | |
| 2025 | 57 |
Dec peaks. Jun dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20905 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 57 | 20.7% | |
| 2 | Power line down | 38 | 13.8% | |
| 3 | Hazardous condition, other | 27 | 9.8% | |
| 4 | Electrical wiring/equipment problem, other | 22 | 8.0% | |
| 5 | Carbon monoxide incident | 21 | 7.6% |
For the 5 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20905 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 9 | 14.5% | |
| 2 | Other | 6 | 9.7% | |
| 3 | Outside area, other | 6 | 9.7% | |
| 4 | Vehicle storage area; garage, carport | 4 | 6.5% | |
| 5 | Cooking area, kitchen | 3 | 4.8% | |
| 6 | Vehicle area, other | 3 | 4.8% | |
| 7 | Highway, parking lot, street: on or near | 3 | 4.8% | |
| 8 | Wildland, woods | 3 | 4.8% | |
| 9 | All other areas | 25 | 40.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 19 | 30.6% | |
| 2 | Heat from powered equipment, other | 9 | 14.5% | |
| 3 | Arcing | 7 | 11.3% | |
| 4 | Hot ember or ash | 6 | 9.7% | |
| 5 | Radiated, conducted heat from operating equipment | 4 | 6.5% | |
| 6 | Heat source: other | 3 | 4.8% | |
| 7 | Spark, ember or flame from operating equipment | 3 | 4.8% | |
| 8 | Cigarette lighter | 3 | 4.8% | |
| 9 | All other sources | 8 | 12.9% |
Largest single-incident losses in ZIP 20905 across 2021–2025. These 8 fires alone account for 722% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $4,000,000 | Building fires | 2024 | Major |
| 2 | $420,000 | Building fires | 2025 | Major |
| 3 | $400,000 | Building fires | 2023 | Major |
| 4 | $200,000 | Building fires | 2022 | Significant |
| 5 | $175,000 | Building fires | 2022 | Significant |
| 6 | $150,000 | Building fires | 2022 | Significant |
| 7 | $150,000 | Building fires | 2025 | Significant |
| 8 | $80,000 | Passenger vehicle fire | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20905.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Silver Spring | 268 | |
| 2 | Spencerville | 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 — 276 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.