ZIP 20852 recorded 191 fire and hazmat incidents in 2025, 1,031 across 2021–2025. Primary county: Montgomery County, MD.
1,031 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 178 | |
| 2022 | 225 | |
| 2023 | 216 | |
| 2024 | 221 | |
| 2025 | 191 |
Jul peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20852 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 265 | 25.7% | |
| 2 | Hazardous condition, other | 169 | 16.4% | |
| 3 | Power line down | 131 | 12.7% | |
| 4 | Electrical wiring/equipment problem, other | 88 | 8.5% | |
| 5 | Carbon monoxide incident | 52 | 5.0% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20852 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 33 | 17.7% | |
| 2 | Engine area, running gear, wheel area | 24 | 12.9% | |
| 3 | Outside area, other | 20 | 10.8% | |
| 4 | Other | 18 | 9.7% | |
| 5 | Vehicle area, other | 12 | 6.5% | |
| 6 | Undetermined | 11 | 5.9% | |
| 7 | Function area, other | 5 | 2.7% | |
| 8 | Chute/container - trash, rubbish, waste | 5 | 2.7% | |
| 9 | All other areas | 58 | 31.2% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 73 | 39.2% | |
| 2 | Heat from powered equipment, other | 19 | 10.2% | |
| 3 | Radiated, conducted heat from operating equipment | 19 | 10.2% | |
| 4 | Heat source: other | 11 | 5.9% | |
| 5 | Hot or smoldering object, other | 10 | 5.4% | |
| 6 | Hot ember or ash | 10 | 5.4% | |
| 7 | Arcing | 9 | 4.8% | |
| 8 | Spark, ember or flame from operating equipment | 7 | 3.8% | |
| 9 | All other sources | 28 | 15.1% |
Largest single-incident losses in ZIP 20852 across 2021–2025. These 8 fires alone account for 859% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $750,000 | Building fires | 2022 | Major |
| 2 | $500,000 | Building fires | 2021 | Major |
| 3 | $500,000 | Mobile property (vehicle) fire, other | 2024 | Major |
| 4 | $500,000 | Building fires | 2024 | Major |
| 5 | $350,000 | Building fires | 2021 | Major |
| 6 | $300,000 | Building fires | 2025 | Major |
| 7 | $250,000 | Building fires | 2021 | Major |
| 8 | $200,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20852.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Rockville | 962 | |
| 2 | Silver Spring | 22 | |
| 3 | Bethesda | 19 | |
| 4 | Kensington | 9 | |
| 5 | Chevy Chase | 5 |
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 — 1,031 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.