ZIP 21701 recorded 311 fire and hazmat incidents in 2025, 1,522 across 2021–2025. Primary county: Frederick County, MD.
1,522 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 246 | |
| 2022 | 315 | |
| 2023 | 301 | |
| 2024 | 349 | |
| 2025 | 311 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21701 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 287 | 18.9% | |
| 2 | Power line down | 232 | 15.2% | |
| 3 | Brush, or brush and grass mixture fire | 90 | 5.9% | |
| 4 | Building fires | 85 | 5.6% | |
| 5 | Cooking fire, confined to container | 85 | 5.6% |
For the 11 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21701 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 46 | 22.4% | |
| 2 | Undetermined | 37 | 18.0% | |
| 3 | Outside area, other | 14 | 6.8% | |
| 4 | Cooking area, kitchen | 13 | 6.3% | |
| 5 | Function area, other | 6 | 2.9% | |
| 6 | Laundry area, wash house (laundry) | 6 | 2.9% | |
| 7 | Operator/passenger area of transportation equip. | 6 | 2.9% | |
| 8 | Cargo/trunk area - all vehicles | 6 | 2.9% | |
| 9 | All other areas | 71 | 34.6% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 78 | 38.0% | |
| 2 | Heat from powered equipment, other | 30 | 14.6% | |
| 3 | Heat source: other | 19 | 9.3% | |
| 4 | Arcing | 19 | 9.3% | |
| 5 | Spark, ember or flame from operating equipment | 11 | 5.4% | |
| 6 | Radiated, conducted heat from operating equipment | 11 | 5.4% | |
| 7 | Hot or smoldering object, other | 8 | 3.9% | |
| 8 | Heat spread from another fire, other | 4 | 2.0% | |
| 9 | All other sources | 25 | 12.2% |
Largest single-incident losses in ZIP 21701 across 2021–2025. These 8 fires alone account for 5242% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,000,000 | Building fires | 2021 | Major |
| 2 | $1,000,000 | Building fires | 2022 | Major |
| 3 | $600,000 | Building fires | 2023 | Major |
| 4 | $300,000 | Building fires | 2023 | Major |
| 5 | $300,000 | Building fires | 2023 | Major |
| 6 | $250,000 | Road freight or transport vehicle fire | 2023 | Major |
| 7 | $200,000 | Road freight or transport vehicle fire | 2022 | Significant |
| 8 | $160,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 21701.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Frederick | 1,479 | |
| 2 | Union Bridge | 2 | |
| 3 | Boonsboro | 1 | |
| 4 | Mount Airy | 1 | |
| 5 | New Market | 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 — 1,522 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.