ZIP 20832 recorded 78 fire and hazmat incidents in 2025, 355 across 2021–2025. Primary county: Montgomery County, MD.
355 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 59 | |
| 2022 | 89 | |
| 2023 | 69 | |
| 2024 | 60 | |
| 2025 | 78 |
Jun peaks. Nov dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20832 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 107 | 30.1% | |
| 2 | Hazardous condition, other | 35 | 9.9% | |
| 3 | Electrical wiring/equipment problem, other | 28 | 7.9% | |
| 4 | Carbon monoxide incident | 26 | 7.3% | |
| 5 | Building fires | 19 | 5.4% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20832 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 16 | 21.9% | |
| 2 | Outside area, other | 8 | 11.0% | |
| 3 | Wildland, woods | 8 | 11.0% | |
| 4 | Other | 6 | 8.2% | |
| 5 | Storage area, other | 4 | 5.5% | |
| 6 | Engine area, running gear, wheel area | 4 | 5.5% | |
| 7 | Open area - outside; included are farmland, field | 4 | 5.5% | |
| 8 | Function area, other | 3 | 4.1% | |
| 9 | All other areas | 20 | 27.4% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 24 | 32.9% | |
| 2 | Arcing | 11 | 15.1% | |
| 3 | Heat from powered equipment, other | 6 | 8.2% | |
| 4 | Radiated, conducted heat from operating equipment | 6 | 8.2% | |
| 5 | Hot or smoldering object, other | 4 | 5.5% | |
| 6 | Hot ember or ash | 4 | 5.5% | |
| 7 | Heat from direct flame, convection currents | 4 | 5.5% | |
| 8 | Heat source: other | 2 | 2.7% | |
| 9 | All other sources | 12 | 16.4% |
Largest single-incident losses in ZIP 20832 across 2021–2025. These 8 fires alone account for 282% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $250,000 | Building fires | 2025 | Major |
| 2 | $200,000 | Building fires | 2021 | Significant |
| 3 | $150,000 | Building fires | 2022 | Significant |
| 4 | $100,000 | Outside storage fire | 2024 | Significant |
| 5 | $50,000 | Building fires | 2022 | Significant |
| 6 | $50,000 | Passenger vehicle fire | 2022 | Significant |
| 7 | $50,000 | Building fires | 2025 | Significant |
| 8 | $40,000 | Passenger vehicle fire | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20832.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Olney | 344 | |
| 2 | Derwood | 2 | |
| 3 | Rockville | 2 | |
| 4 | Gaithersburg | 1 | |
| 5 | Germantown | 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 — 355 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.