ZIP 21640 recorded 28 fire and hazmat incidents in 2025, 84 across 2021–2025. Primary county: Caroline County, MD. FEMA NRI rates wildfire risk here as High.
84 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 11 | |
| 2022 | 8 | |
| 2023 | 13 | |
| 2024 | 24 | |
| 2025 | 28 |
Mar peaks. Aug dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 21640 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 34 | 40.5% | |
| 2 | Gas leak (natural gas or LPG) | 9 | 10.7% | |
| 3 | Fire, other | 6 | 7.1% | |
| 4 | Brush, or brush and grass mixture fire | 6 | 7.1% | |
| 5 | Chimney or flue fire, confined to chimney or flue | 5 | 6.0% |
For the 9 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 21640 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 7 | 35.0% | |
| 2 | Open area - outside; included are farmland, field | 6 | 30.0% | |
| 3 | Exterior balcony, unenclosed porch | 2 | 10.0% | |
| 4 | Other | 1 | 5.0% | |
| 5 | Substructure area or space, crawl space | 1 | 5.0% | |
| 6 | Wall assembly | 1 | 5.0% | |
| 7 | Outside area, other | 1 | 5.0% | |
| 8 | Highway, parking lot, street: on or near | 1 | 5.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 11 | 55.0% | |
| 2 | Hot ember or ash | 2 | 10.0% | |
| 3 | Heat source: other | 1 | 5.0% | |
| 4 | Heat from powered equipment, other | 1 | 5.0% | |
| 5 | Radiated, conducted heat from operating equipment | 1 | 5.0% | |
| 6 | Hot or smoldering object, other | 1 | 5.0% | |
| 7 | Match | 1 | 5.0% | |
| 8 | Heat spread from another fire, other | 1 | 5.0% | |
| 9 | All other sources | 1 | 5.0% |
Largest single-incident losses in ZIP 21640 across 2021–2025. These 2 fires alone account for 100% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $10,000 | Building fires | 2025 | Significant |
| 2 | $10,000 | Building fires | 2025 | Significant |
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 — 84 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.