ZIP 37683 recorded 74 fire and hazmat incidents in 2025, 378 across 2021–2025. Primary county: Johnson County, TN. FEMA NRI rates wildfire risk here as Moderate.
378 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 77 | |
| 2022 | 73 | |
| 2023 | 70 | |
| 2024 | 84 | |
| 2025 | 74 |
Mar peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37683 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 82 | 21.7% | |
| 2 | Brush, or brush and grass mixture fire | 71 | 18.8% | |
| 3 | Fires in structures other than in a building | 51 | 13.5% | |
| 4 | Forest, woods or wildland fire | 31 | 8.2% | |
| 5 | Passenger vehicle fire | 17 | 4.5% |
For the 21 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37683 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 35 | 46.1% | |
| 2 | Other | 5 | 6.6% | |
| 3 | Cooking area, kitchen | 5 | 6.6% | |
| 4 | Vehicle area, other | 4 | 5.3% | |
| 5 | Engine area, running gear, wheel area | 4 | 5.3% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 3 | 3.9% | |
| 7 | Laundry area, wash house (laundry) | 2 | 2.6% | |
| 8 | Vehicle storage area; garage, carport | 2 | 2.6% | |
| 9 | All other areas | 16 | 21.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 59 | 77.6% | |
| 2 | Heat source: other | 4 | 5.3% | |
| 3 | Radiated, conducted heat from operating equipment | 4 | 5.3% | |
| 4 | Heat from powered equipment, other | 2 | 2.6% | |
| 5 | Arcing | 2 | 2.6% | |
| 6 | Hot ember or ash | 2 | 2.6% | |
| 7 | Heat, spark from friction | 1 | 1.3% | |
| 8 | Incendiary device | 1 | 1.3% | |
| 9 | All other sources | 1 | 1.3% |
Largest single-incident losses in ZIP 37683 across 2021–2025. These 8 fires alone account for 174% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $200,000 | Building fires | 2023 | Significant |
| 2 | $196,700 | Fires in structures other than in a building | 2022 | Significant |
| 3 | $100,000 | Fires in structures other than in a building | 2023 | Significant |
| 4 | $100,000 | Fires in structures other than in a building | 2025 | Significant |
| 5 | $98,400 | Building fires | 2021 | Significant |
| 6 | $90,000 | Off-road vehicle or heavy equipment fire | 2023 | Significant |
| 7 | $87,400 | Building fires | 2025 | Significant |
| 8 | $87,400 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37683.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Mountain City | 349 |
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 — 378 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.