In 2025, fire departments serving Dover responded to 359 fire and hazmat incidents — from cooking fires to gas leaks to a single $500K building blaze. Here's the full picture.
Hazardous condition, other lead by count. Building fires lead by dollars. Together the top five categories make up about 60% of all calls.
Mar peaks. Nov dips. Watch for the typical fall climb starting in October.
2,017 incidents 2021–2025. Peak year was 2023. $5.0M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021* | 130 | — | |
| 2022 | 425 | — | |
| 2023 | 628 | +47.8% | |
| 2024 | 475 | -24.4% | |
| 2025 | 359 | -24.4% |
* Well below Dover's usual volume. That almost always means one or more departments didn't submit a full year to NFIRS, not that fires dropped, so no year-over-year change is shown for it.
For the 31 building fires Dover departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 261 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 | 42 | 16.1% | |
| 2 | Cooking area, kitchen | 33 | 12.6% | |
| 3 | Courtyard, patio, porch, terrace | 29 | 11.1% | |
| 4 | Engine area, running gear, wheel area | 19 | 7.3% | |
| 5 | Highway, parking lot, street: on or near | 17 | 6.5% | |
| 6 | Wildland, woods | 14 | 5.4% | |
| 7 | Open area - outside; included are farmland, field | 12 | 4.6% | |
| 8 | Undetermined | 10 | 3.8% | |
| 9 | Other | 7 | 2.7% | |
| 10 | Exterior balcony, unenclosed porch | 7 | 2.7% | |
| 11 | All other areas | 71 | 27.2% |
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 Dover mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 70 | 26.8% | |
| 2 | Cigarette | 34 | 13.0% | |
| 3 | Radiated, conducted heat from operating equipment | 25 | 9.6% | |
| 4 | Arcing | 21 | 8.0% | |
| 5 | Heat source: other | 20 | 7.7% | |
| 6 | Heat from powered equipment, other | 20 | 7.7% | |
| 7 | Hot ember or ash | 10 | 3.8% | |
| 8 | Heat from direct flame, convection currents | 9 | 3.4% | |
| 9 | Spark, ember or flame from operating equipment | 8 | 3.1% | |
| 10 | Cigarette lighter | 8 | 3.1% | |
| 11 | All other sources | 36 | 13.8% |
Largest single-incident property losses reported by Dover departments in 2025. These 8 fires alone account for 94% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | Major | Investigated |
| 2 | $300,000 | Building fires | Major | Investigated |
| 3 | $100,000 | Building fires | Significant | Investigated |
| 4 | $70,000 | Building fires | Significant | Investigated |
| 5 | $50,000 | Building fires | Significant | Investigated |
| 6 | $40,000 | Building fires | Significant | Investigated |
| 7 | $30,000 | Arcing, shorted electrical equipment | Significant | Investigated |
| 8 | $30,000 | Hazardous condition, other | Significant | Investigated |
Per-capita rates let us compare apples to apples. Dover sits above the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 1,796 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2018 | Debris and open burning | 314 | 17.7 mi | |
| 2015 | Missing data/not specified/undetermined | 275 | 45.1 mi | |
| 2001 | Misuse of fire by a minor | 236 | 43.5 mi | |
| 2007 | Missing data/not specified/undetermined | 186 | 39.9 mi | |
| 2015 | Missing data/not specified/undetermined | 92 | 37.9 mi | |
| 2014 | Missing data/not specified/undetermined | 90 | 47.6 mi | |
| 2015 | Missing data/not specified/undetermined | 59 | 36.6 mi | |
| 2019 | Missing data/not specified/undetermined | 54 | 40.5 mi | |
| 2015 | Smoking | 50 | 48.2 mi | |
| 2016 | Missing data/not specified/undetermined | 50 | 27.0 mi | |
| 2016 | Arson/incendiarism | 42 | 35.0 mi | |
| 2016 | Missing data/not specified/undetermined | 41 | 27.7 mi |
Top 4 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
Six New Hampshire cities with population within ±25% of Dover. Useful comparison targets — same state, similar size, different fire profile.
1 departments report to NFIRS for incidents in Dover.
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.