In 2025, fire departments serving Johnson County responded to 92 fire and hazmat incidents — including a single $100K property loss. FEMA NRI rates wildfire risk here as High.
Unauthorized burning lead by count. Top five categories make up about 72% of all calls.
Mar peaks. Sep dips.
947 incidents from 2021 through 2025.
| Year | Incidents | |
|---|---|---|
| 2021 | 143 | |
| 2022 | 254 | |
| 2023 | 191 | |
| 2024 | 267 | |
| 2025 | 92 |
For the 7 building fires departments responded to in 2025, here's how investigators classified them.
Largest single-incident property losses in Johnson County during 2025. These 10 fires alone account for 98% of the county's total.
| # | Property loss | City | Type | Severity |
|---|---|---|---|---|
| 1 | $100,000 | KNOXVILLE | Building fires | Significant |
| 2 | $40,000 | CLARKSVILLE | Building fires | Significant |
| 3 | $13,000 | CLARKSVILLE | Passenger vehicle fire | Significant |
| 4 | $10,000 | CLARKSVILLE | Building fires | Significant |
| 5 | $7,000 | KNOXVILLE | Passenger vehicle fire | Significant |
| 6 | $5,000 | Clarksville | Passenger vehicle fire | Significant |
| 7 | $5,000 | KNOXVILLE | Power line down | Significant |
| 8 | $5,000 | KNOXVILLE | Building fires | Significant |
| 9 | $3,500 | CLARKSVILLE | Passenger vehicle fire | Significant |
| 10 | $2,500 | KNOXVILLE | Building fires | Significant |
Per-capita rates let us compare apples to apples.
12 cities mapped to FIPS 05071.
6 departments report from this county.
Top 10 fire perimeters by acres burned (state-scoped fallback while we build out per-county polygons).
| # | Name | Year | Agency | Acres |
|---|---|---|---|---|
| 1 | No Mans Land | 2006 | USFS | 8,403 |
| 2 | Sulphur Mountain | 2006 | USFS | 4,475 |
| 3 | Big Point | 2016 | USFS | 3,993 |
| 4 | Pipeline | 2016 | USFS | 3,286 |
| 5 | 21 Lick Creek | 2021 | NPS | 3,250 |
| 6 | 20 Cave Creek | 2020 | NPS | 2,939 |
| 7 | Walker | 2024 | USFS | 1,844 |
| 8 | Flat Rock | 2001 | NPS | 1,484 |
| 9 | Slick Rock Hollow | 2013 | NPS | 1,211 |
| 10 | ABOUT TIME | 1996 | NPS | 1,073 |
County-level NFIRS aggregates for 2025, plus 5-year totals across 2021–2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Wildfire risk score (0–100) and Expected Annual Loss come from FEMA's National Risk Index. Drought class is the most recent USDM classification (D0 = abnormally dry through D4 = exceptional drought). Historical fire perimeters are sourced from the NIFC InterAgency Fire Perimeter History.