ZIP 20657 recorded 129 fire and hazmat incidents in 2025, 683 across 2021–2025. Primary county: Calvert County, MD. FEMA NRI rates wildfire risk here as Moderate.
683 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 112 | |
| 2022 | 147 | |
| 2023 | 132 | |
| 2024 | 163 | |
| 2025 | 129 |
Mar peaks. Oct dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20657 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 204 | 29.9% | |
| 2 | Aircraft standby | 183 | 26.8% | |
| 3 | Unauthorized burning | 51 | 7.5% | |
| 4 | Fires in structures other than in a building | 30 | 4.4% | |
| 5 | Brush, or brush and grass mixture fire | 21 | 3.1% |
For the 25 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20657 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 45 | 51.1% | |
| 2 | Engine area, running gear, wheel area | 8 | 9.1% | |
| 3 | Cooking area, kitchen | 6 | 6.8% | |
| 4 | Open area - outside; included are farmland, field | 6 | 6.8% | |
| 5 | Outside area, other | 5 | 5.7% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 3 | 3.4% | |
| 7 | Vehicle storage area; garage, carport | 2 | 2.3% | |
| 8 | Wildland, woods | 2 | 2.3% | |
| 9 | All other areas | 11 | 12.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 67 | 76.1% | |
| 2 | Arcing | 4 | 4.5% | |
| 3 | Heat from powered equipment, other | 3 | 3.4% | |
| 4 | Radiated, conducted heat from operating equipment | 3 | 3.4% | |
| 5 | Spark, ember or flame from operating equipment | 2 | 2.3% | |
| 6 | Hot or smoldering object, other | 2 | 2.3% | |
| 7 | Heat source: other | 1 | 1.1% | |
| 8 | Molten, hot material | 1 | 1.1% | |
| 9 | All other sources | 5 | 5.7% |
Largest single-incident losses in ZIP 20657 across 2021–2025. These 1 fires alone account for 100% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20657.
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 — 683 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.