ZIP 37409 recorded 50 fire and hazmat incidents in 2025, 242 across 2021–2025. Primary county: Hamilton County, TN. FEMA NRI rates wildfire risk here as High.
242 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 47 | |
| 2022 | 39 | |
| 2023 | 45 | |
| 2024 | 61 | |
| 2025 | 50 |
Jun peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37409 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 78 | 32.2% | |
| 2 | Brush, or brush and grass mixture fire | 19 | 7.9% | |
| 3 | Building fires | 16 | 6.6% | |
| 4 | Outside rubbish, trash or waste fire | 16 | 6.6% | |
| 5 | Gas leak (natural gas or LPG) | 13 | 5.4% |
For the 5 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37409 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 20 | 26.3% | |
| 2 | Outside area, other | 15 | 19.7% | |
| 3 | Wildland, woods | 15 | 19.7% | |
| 4 | Open area - outside; included are farmland, field | 4 | 5.3% | |
| 5 | Highway, parking lot, street: on or near | 3 | 3.9% | |
| 6 | Function area, other | 2 | 2.6% | |
| 7 | Cooking area, kitchen | 2 | 2.6% | |
| 8 | Processing/manufacturing area, workroom | 2 | 2.6% | |
| 9 | All other areas | 13 | 17.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 49 | 64.5% | |
| 2 | Heat from powered equipment, other | 4 | 5.3% | |
| 3 | Spark, ember or flame from operating equipment | 4 | 5.3% | |
| 4 | Hot or smoldering object, other | 4 | 5.3% | |
| 5 | Hot ember or ash | 3 | 3.9% | |
| 6 | Flame/torch used for lighting | 3 | 3.9% | |
| 7 | Arcing | 2 | 2.6% | |
| 8 | Cigarette lighter | 2 | 2.6% | |
| 9 | All other sources | 5 | 6.6% |
Largest single-incident losses in ZIP 37409 across 2021–2025. These 8 fires alone account for 320% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $325,000 | Building fires | 2021 | Major |
| 2 | $250,000 | Gasoline or other flammable liquid spill | 2023 | Major |
| 3 | $200,000 | Building fires | 2025 | Significant |
| 4 | $75,000 | Building fires | 2025 | Significant |
| 5 | $60,000 | Building fires | 2021 | Significant |
| 6 | $50,000 | Building fires | 2021 | Significant |
| 7 | $35,000 | Off-road vehicle or heavy equipment fire | 2022 | Significant |
| 8 | $35,000 | Mobile property (vehicle) fire, other | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37409.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Chattanooga | 232 |
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 — 242 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.