ZIP 37640 recorded 47 fire and hazmat incidents in 2025, 172 across 2021–2025. Primary county: Johnson County, TN. FEMA NRI rates wildfire risk here as Moderate.
172 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 26 | |
| 2022 | 24 | |
| 2023 | 27 | |
| 2024 | 48 | |
| 2025 | 47 |
Mar peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37640 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 70 | 40.7% | |
| 2 | Brush, or brush and grass mixture fire | 28 | 16.3% | |
| 3 | Forest, woods or wildland fire | 10 | 5.8% | |
| 4 | Passenger vehicle fire | 9 | 5.2% | |
| 5 | Authorized controlled burning | 9 | 5.2% |
For the 13 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37640 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 12 | 25.0% | |
| 2 | Engine area, running gear, wheel area | 8 | 16.7% | |
| 3 | Outside area, other | 4 | 8.3% | |
| 4 | Open area - outside; included are farmland, field | 4 | 8.3% | |
| 5 | Storage area, other | 3 | 6.2% | |
| 6 | Ceiling & floor assembly, crawl space b/t stories | 3 | 6.2% | |
| 7 | Wildland, woods | 3 | 6.2% | |
| 8 | Bathroom, checkroom, lavatory, locker room | 2 | 4.2% | |
| 9 | All other areas | 9 | 18.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 21 | 43.8% | |
| 2 | Hot ember or ash | 9 | 18.8% | |
| 3 | Arcing | 8 | 16.7% | |
| 4 | Heat from powered equipment, other | 2 | 4.2% | |
| 5 | Spark, ember or flame from operating equipment | 2 | 4.2% | |
| 6 | Fireworks | 1 | 2.1% | |
| 7 | Cigarette lighter | 1 | 2.1% | |
| 8 | Backfire from internal combustion engine | 1 | 2.1% | |
| 9 | All other sources | 3 | 6.2% |
Largest single-incident losses in ZIP 37640 across 2021–2025. These 8 fires alone account for 360% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $700,000 | Building fires | 2021 | Major |
| 2 | $300,000 | Fires in structures other than in a building | 2021 | Major |
| 3 | $300,000 | Building fires | 2025 | Major |
| 4 | $225,000 | Building fires | 2024 | Significant |
| 5 | $219,000 | Building fires | 2023 | Significant |
| 6 | $200,000 | Fire, other | 2025 | Significant |
| 7 | $150,000 | Off-road vehicle or heavy equipment fire | 2022 | Significant |
| 8 | $150,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Carter County | TN | 0.50 | FIPS 47019 |
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 — 172 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.