In 2025, fire departments serving Mariemont responded to 26 fire and hazmat incidents . Here's the full picture.
Building fires lead by count. Building fires lead by dollars. Together the top five categories make up about 62% of all calls.
Dec peaks. Apr dips. Watch for the typical fall climb starting in October.
136 incidents 2021–2025. Peak year was 2022.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 25 | — | |
| 2022 | 54 | +116.0% | |
| 2023* | 14 | — | |
| 2024 | 17 | — | |
| 2025 | 26 | +52.9% |
* Well below Mariemont'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 9 building fires Mariemont departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 25 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 | Cooking area, kitchen | 4 | 16.0% | |
| 2 | Outside area, other | 4 | 16.0% | |
| 3 | Common room, den, family room, living room, lounge | 2 | 8.0% | |
| 4 | Processing/manufacturing area, workroom | 2 | 8.0% | |
| 5 | Storage room, area, tank, or bin | 2 | 8.0% | |
| 6 | Highway, parking lot, street: on or near | 2 | 8.0% | |
| 7 | Open area - outside; included are farmland, field | 2 | 8.0% | |
| 8 | Other | 1 | 4.0% | |
| 9 | Storage area, other | 1 | 4.0% | |
| 10 | Chute/container - trash, rubbish, waste | 1 | 4.0% | |
| 11 | All other areas | 4 | 16.0% |
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 Mariemont mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 7 | 28.0% | |
| 2 | Heat from powered equipment, other | 4 | 16.0% | |
| 3 | Heat source: other | 2 | 8.0% | |
| 4 | Spark, ember or flame from operating equipment | 2 | 8.0% | |
| 5 | Hot ember or ash | 2 | 8.0% | |
| 6 | Hot or smoldering object, other | 1 | 4.0% | |
| 7 | Heat, spark from friction | 1 | 4.0% | |
| 8 | Heat from other open flame or smoking materials | 1 | 4.0% | |
| 9 | Cigarette | 1 | 4.0% | |
| 10 | Cigarette lighter | 1 | 4.0% | |
| 11 | All other sources | 3 | 12.0% |
Per-capita rates let us compare apples to apples. Mariemont sits below the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 732 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2012 | Missing data/not specified/undetermined | 125 | 36.6 mi | |
| 2002 | Missing data/not specified/undetermined | 57 | 19.6 mi | |
| 2010 | Debris and open burning | 53 | 17.9 mi | |
| 2017 | Missing data/not specified/undetermined | 45 | 37.8 mi | |
| 2004 | Debris and open burning | 45 | 39.2 mi | |
| 2014 | Missing data/not specified/undetermined | 40 | 45.7 mi | |
| 2001 | Debris and open burning | 30 | 33.0 mi | |
| 1999 | Debris and open burning | 25 | 36.9 mi | |
| 2010 | Debris and open burning | 25 | 14.0 mi | |
| 2010 | Missing data/not specified/undetermined | 25 | 26.2 mi | |
| 2009 | Debris and open burning | 25 | 45.4 mi | |
| 2017 | Equipment and vehicle use | 25 | 45.8 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 | 45227 | 136 |
Six Ohio cities with population within ±25% of Mariemont. 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.