In 2025, fire departments serving Princeton responded to 30 fire and hazmat incidents — from cooking fires to gas leaks to a single $30K building blaze. Here's the full picture.
Building fires lead by count. Building fires lead by dollars. Together the top five categories make up about 80% of all calls.
Jul peaks. Feb dips. Watch for the typical fall climb starting in October.
113 incidents 2021–2025. Peak year was 2021. $4.4M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 38 | — | |
| 2022* | 8 | — | |
| 2023 | 22 | — | |
| 2024 | 15 | -31.8% | |
| 2025 | 30 | +100.0% |
* Well below Princeton'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 12 building fires Princeton departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 32 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 | Engine area, running gear, wheel area | 11 | 34.4% | |
| 2 | Vehicle storage area; garage, carport | 3 | 9.4% | |
| 3 | Undetermined | 3 | 9.4% | |
| 4 | Bedroom - < 5 persons; included are jail or prison | 2 | 6.2% | |
| 5 | Equipment or service area, other | 2 | 6.2% | |
| 6 | Wall surface: exterior | 2 | 6.2% | |
| 7 | Operator/passenger area of transportation equip. | 2 | 6.2% | |
| 8 | Cooking area, kitchen | 1 | 3.1% | |
| 9 | Bathroom, checkroom, lavatory, locker room | 1 | 3.1% | |
| 10 | Maintenance shop or area, paint shop or area | 1 | 3.1% | |
| 11 | All other areas | 4 | 12.5% |
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 Princeton mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 14 | 43.8% | |
| 2 | Radiated, conducted heat from operating equipment | 9 | 28.1% | |
| 3 | Arcing | 3 | 9.4% | |
| 4 | Heat from powered equipment, other | 1 | 3.1% | |
| 5 | Molten, hot material | 1 | 3.1% | |
| 6 | Match | 1 | 3.1% | |
| 7 | Candle | 1 | 3.1% | |
| 8 | Heat from direct flame, convection currents | 1 | 3.1% | |
| 9 | Flying brand, ember, spark | 1 | 3.1% |
Largest single-incident property losses reported by Princeton departments in 2025. These 7 fires alone account for 100% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $30,000 | Building fires | Significant | Investigated |
| 2 | $20,000 | Building fires | Significant | Investigated |
| 3 | $20,000 | Building fires | Significant | Investigated |
| 4 | $15,000 | Building fires | Significant | Investigated |
| 5 | $3,000 | Building fires | Significant | Investigated |
| 6 | $2,000 | Building fires | Significant | Investigated |
| 7 | $1,000 | Cooking fire, confined to container | Significant | Investigated |
Per-capita rates let us compare apples to apples. Princeton sits above the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 14,137 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2005 | Debris and open burning | 3,410 | 34.8 mi | |
| 2003 | Arson/incendiarism | 1,100 | 44.3 mi | |
| 1994 | Arson/incendiarism | 1,015 | 29.1 mi | |
| 2014 | Debris and open burning | 829 | 20.9 mi | |
| 1998 | Equipment and vehicle use | 630 | 20.9 mi | |
| 2006 | Debris and open burning | 612 | 25.3 mi | |
| 2003 | Debris and open burning | 572 | 13.0 mi | |
| 2003 | Missing data/not specified/undetermined | 508 | 32.3 mi | |
| 2003 | Arson/incendiarism | 484 | 21.6 mi | |
| 2003 | Missing data/not specified/undetermined | 400 | 27.8 mi | |
| 2019 | Arson/incendiarism | 385 | 29.5 mi | |
| 2015 | Railroad operations and maintenance | 366 | 36.5 mi |
Top 1 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
| # | ZIP | 5-yr incidents | |
|---|---|---|---|
| 1 | 54968 | 113 |
Six Wisconsin cities with population within ±25% of Princeton. Useful comparison targets — same state, similar size, different fire profile.
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.