ZIP 37321 recorded 133 fire and hazmat incidents in 2025, 847 across 2021–2025. Primary county: Rhea County, TN. FEMA NRI rates wildfire risk here as Moderate.
847 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 149 | |
| 2022 | 214 | |
| 2023 | 214 | |
| 2024 | 137 | |
| 2025 | 133 |
Nov peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37321 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 134 | 15.8% | |
| 2 | Brush, or brush and grass mixture fire | 84 | 9.9% | |
| 3 | Gas leak (natural gas or LPG) | 84 | 9.9% | |
| 4 | Authorized controlled burning | 74 | 8.7% | |
| 5 | Passenger vehicle fire | 64 | 7.6% |
For the 23 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37321 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 57 | 14.8% | |
| 2 | Open area - outside; included are farmland, field | 49 | 12.8% | |
| 3 | Engine area, running gear, wheel area | 46 | 12.0% | |
| 4 | Outside area, other | 35 | 9.1% | |
| 5 | Wildland, woods | 26 | 6.8% | |
| 6 | Cooking area, kitchen | 24 | 6.2% | |
| 7 | Highway, parking lot, street: on or near | 12 | 3.1% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 11 | 2.9% | |
| 9 | All other areas | 124 | 32.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 128 | 33.3% | |
| 2 | Radiated, conducted heat from operating equipment | 49 | 12.8% | |
| 3 | Arcing | 40 | 10.4% | |
| 4 | Hot ember or ash | 20 | 5.2% | |
| 5 | Heat from powered equipment, other | 19 | 4.9% | |
| 6 | Cigarette lighter | 18 | 4.7% | |
| 7 | Radiated heat from another fire | 14 | 3.6% | |
| 8 | Heat from direct flame, convection currents | 12 | 3.1% | |
| 9 | All other sources | 84 | 21.9% |
Largest single-incident losses in ZIP 37321 across 2021–2025. These 8 fires alone account for 123% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $802,800 | Building fires | 2025 | Major |
| 2 | $285,300 | Building fires | 2025 | Major |
| 3 | $211,200 | Fire in mobile home used as fixed residence | 2024 | Significant |
| 4 | $198,200 | Building fires | 2022 | Significant |
| 5 | $190,000 | Building fires | 2023 | Significant |
| 6 | $175,000 | Building fires | 2022 | Significant |
| 7 | $175,000 | Road freight or transport vehicle fire | 2024 | Significant |
| 8 | $152,300 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37321.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Dayton | 822 | |
| 2 | Spring City | 7 | |
| 3 | Graysville | 2 | |
| 4 | Pikeville | 2 | |
| 5 | Dunlap | 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 — 847 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.