ZIP 21841 recorded 22 fire and hazmat incidents in 2025, 50 across 2021–2025. Primary county: Worcester County, MD. FEMA NRI rates wildfire risk here as High.
50 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 7 | |
| 2022 | 6 | |
| 2023 | 13 | |
| 2024 | 2 | |
| 2025 | 22 |
Jan peaks. Apr dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21841 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 17 | 34.0% | |
| 2 | Brush, or brush and grass mixture fire | 6 | 12.0% | |
| 3 | Vehicle accident, general cleanup | 5 | 10.0% | |
| 4 | Fire, other | 4 | 8.0% | |
| 5 | Natural vegetation fire, other | 4 | 8.0% |
For the 9 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21841 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 7 | 36.8% | |
| 2 | Other | 3 | 15.8% | |
| 3 | Engine area, running gear, wheel area | 2 | 10.5% | |
| 4 | Wildland, woods | 2 | 10.5% | |
| 5 | Cooking area, kitchen | 1 | 5.3% | |
| 6 | Equipment or service area, other | 1 | 5.3% | |
| 7 | Structural area, other | 1 | 5.3% | |
| 8 | Vehicle area, other | 1 | 5.3% | |
| 9 | All other areas | 1 | 5.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 9 | 47.4% | |
| 2 | Spark, ember or flame from operating equipment | 2 | 10.5% | |
| 3 | Heat spread from another fire, other | 2 | 10.5% | |
| 4 | Heat source: other | 1 | 5.3% | |
| 5 | Radiated, conducted heat from operating equipment | 1 | 5.3% | |
| 6 | Arcing | 1 | 5.3% | |
| 7 | Cigarette lighter | 1 | 5.3% | |
| 8 | Heat from direct flame, convection currents | 1 | 5.3% | |
| 9 | All other sources | 1 | 5.3% |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 21841.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Berlin | 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 — 50 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.