In 2025, fire departments serving Maryville responded to 456 fire and hazmat incidents — from cooking fires to gas leaks to a single $745K building blaze. Here's the full picture.
Gas leak (natural gas or LPG) lead by count. Building fires lead by dollars. Together the top five categories make up about 59% of all calls.
Mar peaks. May dips. Watch for the typical fall climb starting in October.
2,245 incidents 2021–2025. Peak year was 2024. $13.3M cumulative property loss. 9 civilian deaths.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 347 | — | |
| 2022 | 428 | +23.3% | |
| 2023 | 500 | +16.8% | |
| 2024 | 514 | +2.8% | |
| 2025 | 456 | -11.3% |
For the 45 building fires Maryville departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 841 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 114 | 13.6% | |
| 2 | Undetermined | 108 | 12.8% | |
| 3 | Open area - outside; included are farmland, field | 92 | 10.9% | |
| 4 | Engine area, running gear, wheel area | 90 | 10.7% | |
| 5 | Highway, parking lot, street: on or near | 68 | 8.1% | |
| 6 | Cooking area, kitchen | 62 | 7.4% | |
| 7 | Wildland, woods | 37 | 4.4% | |
| 8 | Vehicle area, other | 19 | 2.3% | |
| 9 | Other | 18 | 2.1% | |
| 10 | Exterior balcony, unenclosed porch | 16 | 1.9% | |
| 11 | All other areas | 217 | 25.8% |
NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Maryville mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 395 | 47.0% | |
| 2 | Hot ember or ash | 78 | 9.3% | |
| 3 | Radiated, conducted heat from operating equipment | 53 | 6.3% | |
| 4 | Arcing | 46 | 5.5% | |
| 5 | Heat from powered equipment, other | 31 | 3.7% | |
| 6 | Cigarette lighter | 26 | 3.1% | |
| 7 | Spark, ember or flame from operating equipment | 22 | 2.6% | |
| 8 | Hot or smoldering object, other | 20 | 2.4% | |
| 9 | Cigarette | 19 | 2.3% | |
| 10 | Heat source: other | 17 | 2.0% | |
| 11 | All other sources | 134 | 15.9% |
Largest single-incident property losses reported by Maryville departments in 2025. These 8 fires alone account for 72% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $745,100 | Building fires | Major | Investigated |
| 2 | $200,000 | Road freight or transport vehicle fire | Significant | Investigated |
| 3 | $154,000 | Building fires | Significant | Investigated |
| 4 | $150,000 | Building fires | Significant | Investigated |
| 5 | $100,000 | Passenger vehicle fire | Significant | Investigated |
| 6 | $80,000 | Passenger vehicle fire | Significant | Investigated |
| 7 | $75,000 | Fires in structures other than in a building | Significant | Investigated |
| 8 | $74,000 | Off-road vehicle or heavy equipment fire | Significant | Investigated |
Per-capita rates let us compare apples to apples. Maryville sits above the national average for incidents per resident.
25 fire-related casualties recorded in NFIRS Module 11 across the 2021–2025 window. Age, gender, and severity are coarse-binned — no individual identification possible.
| Age | Count | |
|---|---|---|
| 0-9 | 2 | |
| 10-19 | 1 | |
| 20-29 | 1 | |
| 30-39 | 4 | |
| 40-49 | 10 | |
| 50-59 | 4 | |
| 60-69 | 1 | |
| 70-79 | 2 | |
| 80+ | 0 |
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 103,230 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2016 | Misuse of fire by a minor | 17,140 | 29.2 mi | |
| 2016 | Arson/incendiarism | 10,641 | 40.3 mi | |
| 2016 | Missing data/not specified/undetermined | 10,586 | 49.8 mi | |
| 2000 | Arson/incendiarism | 8,134 | 40.7 mi | |
| 2016 | Arson/incendiarism | 7,788 | 24.5 mi | |
| 2001 | Arson/incendiarism | 7,580 | 33.6 mi | |
| 2000 | Arson/incendiarism | 3,450 | 43.8 mi | |
| 2016 | Arson/incendiarism | 3,422 | 47.3 mi | |
| 2016 | Arson/incendiarism | 3,231 | 35.7 mi | |
| 2001 | Arson/incendiarism | 3,200 | 11.4 mi | |
| 2000 | Arson/incendiarism | 2,944 | 32.1 mi | |
| 2000 | Arson/incendiarism | 2,784 | 48.5 mi |
Top 5 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
Six Tennessee cities with population within ±25% of Maryville. Useful comparison targets — same state, similar size, different fire profile.
2 departments report to NFIRS for incidents in Maryville.
A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.
Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 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. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.