ZIP 20620 recorded 20 fire and hazmat incidents in 2025, 100 across 2021–2025. Primary county: St. Mary's County, MD. FEMA NRI rates wildfire risk here as Moderate.
100 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 7 | |
| 2022 | 19 | |
| 2023 | 32 | |
| 2024 | 22 | |
| 2025 | 20 |
May peaks. Jul dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20620 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 34 | 34.0% | |
| 2 | Aircraft standby | 26 | 26.0% | |
| 3 | Gas leak (natural gas or LPG) | 7 | 7.0% | |
| 4 | Fires in structures other than in a building | 3 | 3.0% | |
| 5 | Brush, or brush and grass mixture fire | 3 | 3.0% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20620 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 8 | 57.1% | |
| 2 | Wall surface: exterior | 2 | 14.3% | |
| 3 | Wildland, woods | 2 | 14.3% | |
| 4 | Vehicle storage area; garage, carport | 1 | 7.1% | |
| 5 | Outside area, other | 1 | 7.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 10 | 71.4% | |
| 2 | Hot or smoldering object, other | 2 | 14.3% | |
| 3 | Fireworks | 1 | 7.1% | |
| 4 | Cigarette | 1 | 7.1% |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20620.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Callaway | 97 | |
| 2 | Chestertown | 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 — 100 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.