ZIP 20904 recorded 245 fire and hazmat incidents in 2025, 1,135 across 2021–2025. Primary county: Montgomery County, MD.
1,135 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 184 | |
| 2022 | 218 | |
| 2023 | 232 | |
| 2024 | 256 | |
| 2025 | 245 |
Mar peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20904 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 297 | 26.2% | |
| 2 | Hazardous condition, other | 99 | 8.7% | |
| 3 | Power line down | 95 | 8.4% | |
| 4 | Carbon monoxide incident | 81 | 7.1% | |
| 5 | Electrical wiring/equipment problem, other | 74 | 6.5% |
For the 12 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20904 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 56 | 19.1% | |
| 2 | Engine area, running gear, wheel area | 52 | 17.7% | |
| 3 | Outside area, other | 31 | 10.6% | |
| 4 | Other | 21 | 7.2% | |
| 5 | Undetermined | 18 | 6.1% | |
| 6 | Highway, parking lot, street: on or near | 13 | 4.4% | |
| 7 | Vehicle area, other | 11 | 3.8% | |
| 8 | Chute/container - trash, rubbish, waste | 10 | 3.4% | |
| 9 | All other areas | 81 | 27.6% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 120 | 41.0% | |
| 2 | Heat from powered equipment, other | 38 | 13.0% | |
| 3 | Heat source: other | 23 | 7.8% | |
| 4 | Radiated, conducted heat from operating equipment | 21 | 7.2% | |
| 5 | Arcing | 18 | 6.1% | |
| 6 | Spark, ember or flame from operating equipment | 9 | 3.1% | |
| 7 | Hot or smoldering object, other | 8 | 2.7% | |
| 8 | Hot ember or ash | 5 | 1.7% | |
| 9 | All other sources | 51 | 17.4% |
Largest single-incident losses in ZIP 20904 across 2021–2025. These 8 fires alone account for 188% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $600,000 | Building fires | 2025 | Major |
| 2 | $500,000 | Building fires | 2024 | Major |
| 3 | $250,000 | Building fires | 2024 | Major |
| 4 | $150,000 | Building fires | 2024 | Significant |
| 5 | $125,000 | Building fires | 2023 | Significant |
| 6 | $100,000 | Building fires | 2022 | Significant |
| 7 | $100,000 | Outside equipment fire | 2022 | Significant |
| 8 | $100,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20904.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Silver Spring | 1,124 | |
| 2 | Burtonsville | 6 | |
| 3 | Bethesda | 1 | |
| 4 | Montgomery Village | 1 | |
| 5 | Rockville | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Prince George's County | MD | 0.50 | FIPS 24033 |
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 — 1,135 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.