ZIP 21157 recorded 549 fire and hazmat incidents in 2025, 2,463 across 2021–2025. Primary county: Carroll County, MD.
2,463 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 411 | |
| 2022 | 541 | |
| 2023 | 435 | |
| 2024 | 527 | |
| 2025 | 549 |
Dec peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21157 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 722 | 29.3% | |
| 2 | Gas leak (natural gas or LPG) | 487 | 19.8% | |
| 3 | Power line down | 244 | 9.9% | |
| 4 | Electrical wiring/equipment problem, other | 152 | 6.2% | |
| 5 | Brush, or brush and grass mixture fire | 121 | 4.9% |
For the 158 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21157 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 76 | 16.2% | |
| 2 | Cooking area, kitchen | 59 | 12.6% | |
| 3 | Engine area, running gear, wheel area | 54 | 11.5% | |
| 4 | Wildland, woods | 43 | 9.2% | |
| 5 | Open area - outside; included are farmland, field | 38 | 8.1% | |
| 6 | Undetermined | 27 | 5.8% | |
| 7 | Other | 20 | 4.3% | |
| 8 | Highway, parking lot, street: on or near | 14 | 3.0% | |
| 9 | All other areas | 137 | 29.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 221 | 47.2% | |
| 2 | Hot ember or ash | 44 | 9.4% | |
| 3 | Radiated, conducted heat from operating equipment | 39 | 8.3% | |
| 4 | Heat from powered equipment, other | 26 | 5.6% | |
| 5 | Arcing | 23 | 4.9% | |
| 6 | Heat source: other | 17 | 3.6% | |
| 7 | Cigarette | 14 | 3.0% | |
| 8 | Hot or smoldering object, other | 13 | 2.8% | |
| 9 | All other sources | 71 | 15.2% |
Largest single-incident losses in ZIP 21157 across 2021–2025. These 8 fires alone account for 169% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | 2022 | Major |
| 2 | $500,000 | Building fires | 2022 | Major |
| 3 | $500,000 | Building fires | 2024 | Major |
| 4 | $500,000 | Building fires | 2025 | Major |
| 5 | $400,000 | Building fires | 2021 | Major |
| 6 | $300,000 | Building fires | 2025 | Major |
| 7 | $250,000 | Building fires | 2022 | Major |
| 8 | $250,000 | Building fires | 2023 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 21157.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Westminster | 2,302 | |
| 2 | Hampstead | 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 — 2,463 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.