In 2025, fire departments serving Herndon responded to 206 fire and hazmat incidents — from cooking fires to gas leaks to a single $329K 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 57% of all calls.
Mar peaks. Sep dips. Watch for the typical fall climb starting in October.
1,373 incidents 2021–2025. Peak year was 2021. $4.0M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 383 | — | |
| 2022* | 153 | — | |
| 2023 | 293 | — | |
| 2024 | 338 | +15.4% | |
| 2025 | 206 | -39.1% |
* Well below Herndon'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 17 building fires Herndon departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 466 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 | Undetermined | 109 | 23.4% | |
| 2 | Outside area, other | 99 | 21.2% | |
| 3 | Highway, parking lot, street: on or near | 43 | 9.2% | |
| 4 | Engine area, running gear, wheel area | 42 | 9.0% | |
| 5 | Cooking area, kitchen | 26 | 5.6% | |
| 6 | Open area - outside; included are farmland, field | 15 | 3.2% | |
| 7 | Exterior balcony, unenclosed porch | 14 | 3.0% | |
| 8 | Wildland, woods | 13 | 2.8% | |
| 9 | Vehicle area, other | 12 | 2.6% | |
| 10 | Bedroom - < 5 persons; included are jail or prison | 11 | 2.4% | |
| 11 | All other areas | 82 | 17.6% |
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 Herndon mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 155 | 33.3% | |
| 2 | Cigarette | 61 | 13.1% | |
| 3 | Heat source: other | 39 | 8.4% | |
| 4 | Hot ember or ash | 27 | 5.8% | |
| 5 | Hot or smoldering object, other | 26 | 5.6% | |
| 6 | Heat from powered equipment, other | 25 | 5.4% | |
| 7 | Arcing | 23 | 4.9% | |
| 8 | Radiated, conducted heat from operating equipment | 21 | 4.5% | |
| 9 | Heat from other open flame or smoking materials | 15 | 3.2% | |
| 10 | Cigarette lighter | 11 | 2.4% | |
| 11 | All other sources | 63 | 13.5% |
Largest single-incident property losses reported by Herndon departments in 2025. These 8 fires alone account for 94% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $329,244 | Building fires | Major | Investigated |
| 2 | $207,410 | Building fires | Significant | Investigated |
| 3 | $170,643 | Building fires | Significant | Investigated |
| 4 | $161,700 | Building fires | Significant | Investigated |
| 5 | $150,000 | Building fires | Significant | Investigated |
| 6 | $84,982 | Building fires | Significant | Investigated |
| 7 | $35,000 | Passenger vehicle fire | Significant | Investigated |
| 8 | $17,767 | Building fires | Significant | Investigated |
Per-capita rates let us compare apples to apples. Herndon sits above the national average for incidents per resident.
11 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 | 0 | |
| 10-19 | 1 | |
| 20-29 | 3 | |
| 30-39 | 2 | |
| 40-49 | 0 | |
| 50-59 | 4 | |
| 60-69 | 0 | |
| 70-79 | 0 | |
| 80+ | 1 |
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 7,745 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2011 | Other causes | 1,989 | 44.9 mi | |
| 1999 | Missing data/not specified/undetermined | 640 | 29.4 mi | |
| 2011 | Recreation and ceremony | 500 | 35.7 mi | |
| 2011 | Missing data/not specified/undetermined | 461 | 12.6 mi | |
| 2011 | Missing data/not specified/undetermined | 431 | 27.9 mi | |
| 1996 | Recreation and ceremony | 405 | 26.6 mi | |
| 1996 | Missing data/not specified/undetermined | 400 | 26.8 mi | |
| 1996 | Arson/incendiarism | 350 | 27.8 mi | |
| 2011 | Missing data/not specified/undetermined | 344 | 46.6 mi | |
| 2006 | Arson/incendiarism | 318 | 25.6 mi | |
| 2008 | Natural | 300 | 49.2 mi | |
| 1999 | Missing data/not specified/undetermined | 250 | 26.6 mi |
Top 10 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
Six Virginia cities with population within ±25% of Herndon. 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.