ZIP 21104 recorded 26 fire and hazmat incidents in 2025, 163 across 2021–2025. Primary county: Carroll County, MD.
163 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 17 | |
| 2022 | 32 | |
| 2023 | 28 | |
| 2024 | 60 | |
| 2025 | 26 |
Aug peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21104 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 57 | 35.0% | |
| 2 | Gas leak (natural gas or LPG) | 15 | 9.2% | |
| 3 | Building fires | 11 | 6.7% | |
| 4 | Brush, or brush and grass mixture fire | 9 | 5.5% | |
| 5 | Electrical wiring/equipment problem, other | 9 | 5.5% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21104 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 7 | 25.0% | |
| 2 | Other | 3 | 10.7% | |
| 3 | Storage area, other | 3 | 10.7% | |
| 4 | Engine area, running gear, wheel area | 3 | 10.7% | |
| 5 | Wildland, woods | 3 | 10.7% | |
| 6 | Vehicle area, other | 2 | 7.1% | |
| 7 | Open area - outside; included are farmland, field | 2 | 7.1% | |
| 8 | Common room, den, family room, living room, lounge | 1 | 3.6% | |
| 9 | All other areas | 4 | 14.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 12 | 42.9% | |
| 2 | Heat source: other | 4 | 14.3% | |
| 3 | Arcing | 3 | 10.7% | |
| 4 | Heat, spark from friction | 2 | 7.1% | |
| 5 | Heat from direct flame, convection currents | 2 | 7.1% | |
| 6 | Radiated, conducted heat from operating equipment | 1 | 3.6% | |
| 7 | Hot or smoldering object, other | 1 | 3.6% | |
| 8 | Molten, hot material | 1 | 3.6% | |
| 9 | All other sources | 2 | 7.1% |
Largest single-incident losses in ZIP 21104 across 2021–2025. These 1 fires alone account for 0% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1 | Outside rubbish fire, other | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 21104.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Columbia | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Howard County | MD | 1.00 | FIPS 24027 |
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 — 163 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.