ZIP 37663 recorded 109 fire and hazmat incidents in 2025, 361 across 2021–2025. Primary county: Sullivan County, TN.
361 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 59 | |
| 2022 | 77 | |
| 2023 | 54 | |
| 2024 | 62 | |
| 2025 | 109 |
Nov peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37663 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 69 | 19.1% | |
| 2 | Authorized controlled burning | 53 | 14.7% | |
| 3 | Brush, or brush and grass mixture fire | 33 | 9.1% | |
| 4 | Unauthorized burning | 25 | 6.9% | |
| 5 | Outside rubbish, trash or waste fire | 20 | 5.5% |
For the 18 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37663 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 25 | 16.7% | |
| 2 | Undetermined | 24 | 16.0% | |
| 3 | Engine area, running gear, wheel area | 18 | 12.0% | |
| 4 | Open area - outside; included are farmland, field | 16 | 10.7% | |
| 5 | Highway, parking lot, street: on or near | 9 | 6.0% | |
| 6 | Wildland, woods | 8 | 5.3% | |
| 7 | Cooking area, kitchen | 7 | 4.7% | |
| 8 | Wall surface: exterior | 4 | 2.7% | |
| 9 | All other areas | 39 | 26.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 76 | 50.7% | |
| 2 | Heat source: other | 12 | 8.0% | |
| 3 | Radiated, conducted heat from operating equipment | 12 | 8.0% | |
| 4 | Arcing | 12 | 8.0% | |
| 5 | Heat from powered equipment, other | 6 | 4.0% | |
| 6 | Hot ember or ash | 6 | 4.0% | |
| 7 | Fireworks | 4 | 2.7% | |
| 8 | Cigarette lighter | 4 | 2.7% | |
| 9 | All other sources | 18 | 12.0% |
Largest single-incident losses in ZIP 37663 across 2021–2025. These 8 fires alone account for 154% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2025 | Major |
| 2 | $250,000 | Building fires | 2024 | Major |
| 3 | $250,000 | Building fires | 2024 | Major |
| 4 | $150,000 | Road freight or transport vehicle fire | 2021 | Significant |
| 5 | $150,000 | Building fires | 2025 | Significant |
| 6 | $150,000 | Building fires | 2025 | Significant |
| 7 | $100,000 | Building fires | 2023 | Significant |
| 8 | $85,000 | Road freight or transport vehicle fire | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37663.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Colonial Heights | 168 | |
| 2 | Kingsport | 141 | |
| 3 | Sullivan Gardens | 38 | |
| 4 | Blountville | 2 | |
| 5 | Johnson City | 2 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Washington County | TN | 1.00 | FIPS 47179 |
| Hawkins County | TN | 0.50 | FIPS 47073 |
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 — 361 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.