ZIP 37923 recorded 128 fire and hazmat incidents in 2025, 493 across 2021–2025. Primary county: Knox County, TN. FEMA NRI rates wildfire risk here as High.
493 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 87 | |
| 2022 | 77 | |
| 2023 | 105 | |
| 2024 | 96 | |
| 2025 | 128 |
Apr peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37923 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 59 | 12.0% | |
| 2 | Brush, or brush and grass mixture fire | 41 | 8.3% | |
| 3 | Cooking fire, confined to container | 36 | 7.3% | |
| 4 | Passenger vehicle fire | 34 | 6.9% | |
| 5 | Unauthorized burning | 34 | 6.9% |
For the 7 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37923 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 27 | 18.8% | |
| 2 | Undetermined | 16 | 11.1% | |
| 3 | Outside area, other | 14 | 9.7% | |
| 4 | Cooking area, kitchen | 12 | 8.3% | |
| 5 | Wildland, woods | 12 | 8.3% | |
| 6 | Highway, parking lot, street: on or near | 11 | 7.6% | |
| 7 | Open area - outside; included are farmland, field | 11 | 7.6% | |
| 8 | Vehicle area, other | 5 | 3.5% | |
| 9 | All other areas | 36 | 25.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 86 | 59.7% | |
| 2 | Hot ember or ash | 12 | 8.3% | |
| 3 | Spark, ember or flame from operating equipment | 8 | 5.6% | |
| 4 | Arcing | 8 | 5.6% | |
| 5 | Radiated, conducted heat from operating equipment | 7 | 4.9% | |
| 6 | Hot or smoldering object, other | 5 | 3.5% | |
| 7 | Heat from powered equipment, other | 4 | 2.8% | |
| 8 | Heat source: other | 3 | 2.1% | |
| 9 | All other sources | 11 | 7.6% |
Largest single-incident losses in ZIP 37923 across 2021–2025. These 8 fires alone account for 323% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,700,000 | Building fires | 2024 | Major |
| 2 | $300,000 | Building fires | 2022 | Major |
| 3 | $300,000 | Off-road vehicle or heavy equipment fire | 2025 | Major |
| 4 | $275,300 | Building fires | 2025 | Major |
| 5 | $136,060 | Building fires | 2025 | Significant |
| 6 | $81,110 | Building fires | 2021 | Significant |
| 7 | $70,000 | Building fires | 2021 | Significant |
| 8 | $67,089 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37923.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Knoxville | 474 |
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 — 493 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.