ZIP 37807 recorded 81 fire and hazmat incidents in 2025, 334 across 2021–2025. Primary county: Union County, TN. FEMA NRI rates wildfire risk here as Moderate.
334 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 70 | |
| 2022 | 75 | |
| 2023 | 57 | |
| 2024 | 51 | |
| 2025 | 81 |
Mar peaks. Oct dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37807 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 100 | 29.9% | |
| 2 | Forest, woods or wildland fire | 40 | 12.0% | |
| 3 | Passenger vehicle fire | 24 | 7.2% | |
| 4 | Brush, or brush and grass mixture fire | 22 | 6.6% | |
| 5 | Fire, other | 18 | 5.4% |
For the 29 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37807 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 38 | 30.9% | |
| 2 | Open area - outside; included are farmland, field | 13 | 10.6% | |
| 3 | Outside area, other | 12 | 9.8% | |
| 4 | Engine area, running gear, wheel area | 7 | 5.7% | |
| 5 | Cooking area, kitchen | 6 | 4.9% | |
| 6 | Wildland, woods | 6 | 4.9% | |
| 7 | Other | 4 | 3.3% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 4 | 3.3% | |
| 9 | All other areas | 33 | 26.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 67 | 54.5% | |
| 2 | Arcing | 9 | 7.3% | |
| 3 | Heat source: other | 6 | 4.9% | |
| 4 | Cigarette lighter | 6 | 4.9% | |
| 5 | Heat from powered equipment, other | 5 | 4.1% | |
| 6 | Radiated, conducted heat from operating equipment | 4 | 3.3% | |
| 7 | Hot or smoldering object, other | 4 | 3.3% | |
| 8 | Hot ember or ash | 4 | 3.3% | |
| 9 | All other sources | 18 | 14.6% |
Largest single-incident losses in ZIP 37807 across 2021–2025. These 8 fires alone account for 931% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $350,000 | Building fires | 2021 | Major |
| 2 | $180,000 | Building fires | 2023 | Significant |
| 3 | $80,000 | Road freight or transport vehicle fire | 2023 | Significant |
| 4 | $75,000 | Building fires | 2021 | Significant |
| 5 | $75,000 | Building fires | 2025 | Significant |
| 6 | $50,000 | Mobile property (vehicle) fire, other | 2021 | Significant |
| 7 | $32,875 | Building fires | 2022 | Significant |
| 8 | $19,300 | Passenger vehicle fire | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37807.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Maynardville | 304 | |
| 2 | Knoxville | 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 — 334 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.