ZIP 21631 recorded 37 fire and hazmat incidents in 2025, 131 across 2021–2025. Primary county: Dorchester County, MD. FEMA NRI rates wildfire risk here as Very High.
131 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 16 | |
| 2022 | 25 | |
| 2023 | 24 | |
| 2024 | 29 | |
| 2025 | 37 |
Mar peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21631 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 36 | 27.5% | |
| 2 | Brush, or brush and grass mixture fire | 21 | 16.0% | |
| 3 | Forest, woods or wildland fire | 16 | 12.2% | |
| 4 | Fires in structures other than in a building | 6 | 4.6% | |
| 5 | Fire, other | 4 | 3.1% |
For the 9 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21631 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 12 | 32.4% | |
| 2 | Outside area, other | 5 | 13.5% | |
| 3 | Other | 4 | 10.8% | |
| 4 | Engine area, running gear, wheel area | 4 | 10.8% | |
| 5 | Bedroom - < 5 persons; included are jail or prison | 2 | 5.4% | |
| 6 | Storage: supplies or tools; dead storage | 2 | 5.4% | |
| 7 | Wall surface: exterior | 2 | 5.4% | |
| 8 | Cooking area, kitchen | 1 | 2.7% | |
| 9 | All other areas | 5 | 13.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 19 | 51.4% | |
| 2 | Heat source: other | 3 | 8.1% | |
| 3 | Heat from powered equipment, other | 2 | 5.4% | |
| 4 | Spark, ember or flame from operating equipment | 2 | 5.4% | |
| 5 | Arcing | 2 | 5.4% | |
| 6 | Hot or smoldering object, other | 2 | 5.4% | |
| 7 | Hot ember or ash | 2 | 5.4% | |
| 8 | Radiated, conducted heat from operating equipment | 1 | 2.7% | |
| 9 | All other sources | 4 | 10.8% |
Largest single-incident losses in ZIP 21631 across 2021–2025. These 8 fires alone account for 664% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | 2023 | Major |
| 2 | $100,000 | Building fires | 2024 | Significant |
| 3 | $50,000 | Mobile property (vehicle) fire, other | 2025 | Significant |
| 4 | $50,000 | Building fires | 2025 | Significant |
| 5 | $25,000 | Passenger vehicle fire | 2024 | Significant |
| 6 | $10,000 | Building fires | 2024 | Significant |
| 7 | $10,000 | Building fires | 2025 | Significant |
| 8 | $2,500 | Outside rubbish fire, other | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 21631.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Secretary | 8 | |
| 2 | Millington | 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 — 131 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.