ZIP 20636 recorded 84 fire and hazmat incidents in 2025, 361 across 2021–2025. Primary county: St. Mary's County, MD. FEMA NRI rates wildfire risk here as Moderate.
361 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 65 | |
| 2022 | 80 | |
| 2023 | 55 | |
| 2024 | 77 | |
| 2025 | 84 |
Feb peaks. Jul dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20636 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 127 | 35.2% | |
| 2 | Gas leak (natural gas or LPG) | 56 | 15.5% | |
| 3 | Brush, or brush and grass mixture fire | 34 | 9.4% | |
| 4 | Authorized controlled burning | 13 | 3.6% | |
| 5 | Fires in structures other than in a building | 12 | 3.3% |
For the 23 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20636 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 13 | 34.2% | |
| 2 | Wildland, woods | 4 | 10.5% | |
| 3 | Cooking area, kitchen | 3 | 7.9% | |
| 4 | Engine area, running gear, wheel area | 3 | 7.9% | |
| 5 | Other | 2 | 5.3% | |
| 6 | Storage area, other | 2 | 5.3% | |
| 7 | Duct: hvac, cable, exhaust, heating, or AC | 2 | 5.3% | |
| 8 | Outside area, other | 2 | 5.3% | |
| 9 | All other areas | 7 | 18.4% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 21 | 55.3% | |
| 2 | Heat from powered equipment, other | 3 | 7.9% | |
| 3 | Arcing | 3 | 7.9% | |
| 4 | Hot ember or ash | 3 | 7.9% | |
| 5 | Spark, ember or flame from operating equipment | 2 | 5.3% | |
| 6 | Radiated, conducted heat from operating equipment | 2 | 5.3% | |
| 7 | Hot or smoldering object, other | 1 | 2.6% | |
| 8 | Cigarette | 1 | 2.6% | |
| 9 | All other sources | 2 | 5.3% |
Largest single-incident losses in ZIP 20636 across 2021–2025. These 8 fires alone account for 103% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $100,000 | Building fires | 2025 | Significant |
| 2 | $70,000 | Building fires | 2025 | Significant |
| 3 | $20,000 | Passenger vehicle fire | 2025 | Significant |
| 4 | $10,000 | Passenger vehicle fire | 2025 | Significant |
| 5 | $3,000 | Fires in structures other than in a building | 2024 | Significant |
| 6 | $1,000 | Off-road vehicle or heavy equipment fire | 2024 | Significant |
| 7 | $750 | Fires in structures other than in a building | 2023 | Significant |
| 8 | $500 | Cooking fire, confined to container | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20636.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | California | 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 — 361 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.