ZIP 37604 recorded 325 fire and hazmat incidents in 2025, 577 across 2021–2025. Primary county: Washington County, TN. FEMA NRI rates wildfire risk here as Moderate.
577 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 140 | |
| 2022 | 43 | |
| 2023 | 29 | |
| 2024 | 40 | |
| 2025 | 325 |
Apr peaks. Aug dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 37604 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 79 | 13.7% | |
| 2 | Gas leak (natural gas or LPG) | 65 | 11.3% | |
| 3 | Cooking fire, confined to container | 50 | 8.7% | |
| 4 | Outside rubbish, trash or waste fire | 39 | 6.8% | |
| 5 | Brush, or brush and grass mixture fire | 37 | 6.4% |
For the 26 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 37604 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 36 | 16.2% | |
| 2 | Cooking area, kitchen | 31 | 14.0% | |
| 3 | Open area - outside; included are farmland, field | 23 | 10.4% | |
| 4 | Engine area, running gear, wheel area | 16 | 7.2% | |
| 5 | Outside area, other | 15 | 6.8% | |
| 6 | Chute/container - trash, rubbish, waste | 9 | 4.1% | |
| 7 | Other | 8 | 3.6% | |
| 8 | Highway, parking lot, street: on or near | 8 | 3.6% | |
| 9 | All other areas | 76 | 34.2% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 110 | 49.5% | |
| 2 | Radiated, conducted heat from operating equipment | 21 | 9.5% | |
| 3 | Arcing | 17 | 7.7% | |
| 4 | Heat from other open flame or smoking materials | 9 | 4.1% | |
| 5 | Heat from powered equipment, other | 7 | 3.2% | |
| 6 | Hot ember or ash | 7 | 3.2% | |
| 7 | Cigarette | 7 | 3.2% | |
| 8 | Heat source: other | 6 | 2.7% | |
| 9 | All other sources | 38 | 17.1% |
Largest single-incident losses in ZIP 37604 across 2021–2025. These 8 fires alone account for 160% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $400,000 | Building fires | 2022 | Major |
| 2 | $300,000 | Building fires | 2022 | Major |
| 3 | $300,000 | Building fires | 2025 | Major |
| 4 | $175,000 | Building fires | 2025 | Significant |
| 5 | $150,000 | Building fires | 2022 | Significant |
| 6 | $150,000 | Building fires | 2023 | Significant |
| 7 | $150,000 | Building fires | 2025 | Significant |
| 8 | $150,000 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 37604.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Johnson City | 538 | |
| 2 | Jonesborough | 5 | |
| 3 | Elizabethton | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Carter County | TN | 0.50 | FIPS 47019 |
| Sullivan County | TN | 0.50 | FIPS 47163 |
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 — 577 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.