ZIP 37909 recorded 49 fire and hazmat incidents in 2025, 248 across 2021–2025. Primary county: Knox County, TN. FEMA NRI rates wildfire risk here as High.
248 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 42 | |
| 2022 | 54 | |
| 2023 | 62 | |
| 2024 | 41 | |
| 2025 | 49 |
Aug peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37909 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 32 | 12.9% | |
| 2 | Cooking fire, confined to container | 25 | 10.1% | |
| 3 | Building fires | 23 | 9.3% | |
| 4 | Passenger vehicle fire | 23 | 9.3% | |
| 5 | Brush, or brush and grass mixture fire | 22 | 8.9% |
For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37909 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 21 | 20.8% | |
| 2 | Outside area, other | 21 | 20.8% | |
| 3 | Undetermined | 13 | 12.9% | |
| 4 | Cooking area, kitchen | 12 | 11.9% | |
| 5 | Exterior balcony, unenclosed porch | 4 | 4.0% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 3 | 3.0% | |
| 7 | Vehicle storage area; garage, carport | 3 | 3.0% | |
| 8 | Vehicle area, other | 3 | 3.0% | |
| 9 | All other areas | 21 | 20.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 60 | 59.4% | |
| 2 | Heat from powered equipment, other | 7 | 6.9% | |
| 3 | Heat source: other | 5 | 5.0% | |
| 4 | Cigarette | 5 | 5.0% | |
| 5 | Radiated, conducted heat from operating equipment | 4 | 4.0% | |
| 6 | Hot or smoldering object, other | 4 | 4.0% | |
| 7 | Spark, ember or flame from operating equipment | 3 | 3.0% | |
| 8 | Arcing | 3 | 3.0% | |
| 9 | All other sources | 10 | 9.9% |
Largest single-incident losses in ZIP 37909 across 2021–2025. These 8 fires alone account for 883% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $400,000 | Building fires | 2023 | Major |
| 2 | $350,000 | Building fires | 2024 | Major |
| 3 | $237,600 | Building fires | 2022 | Significant |
| 4 | $200,000 | Building fires | 2024 | Significant |
| 5 | $150,000 | Building fires | 2025 | Significant |
| 6 | $125,000 | Building fires | 2024 | Significant |
| 7 | $105,450 | Fires in structures other than in a building | 2024 | Significant |
| 8 | $100,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37909.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Knoxville | 238 | |
| 2 | Wesley Chapel | 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 — 248 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.