Cooking is the leading cause of fires in the United States, responsible for 51% of all residential building fires. In 2024, local fire departments responded to an estimated 1,388,000 fires nationwide, causing 3,920 civilian deaths, 11,780 injuries, and $19.1 billion in property damage. While cooking starts the most fires by far, it’s not what kills the most people. The deadliest fire causes tell a different and more surprising story.
Why Cooking Fires Are So Common
The single biggest contributor to cooking fires is walking away from the stove. Unattended equipment accounts for 37% of cooking fires that spread beyond the pot or pan. Grease gets too hot, food boils over onto a burner, or a dish towel sitting too close to a flame catches fire. These scenarios play out thousands of times a year across the country.
The good news is that most cooking fires stay small. About 93% are confined fires, meaning the flames never leave the pot, pan, or oven where they started. A grease flare-up that stays in the skillet still counts as a fire, and these contained incidents make up the bulk of that 51% figure. The fires that do escape containment, though, can destroy a kitchen or an entire home in minutes.
Cooking also tops the list for non-residential buildings. In 2023, cooking caused an estimated 33,300 fires in commercial and other non-residential structures, more than double the next leading cause.
What Actually Kills People in Fires
Cooking may start the most fires, but “other unintentional, careless” actions have been the leading cause of residential fire deaths for 9 out of the last 10 years. In 2023 alone, this category accounted for an estimated 625 fire deaths, followed by 305 deaths from electrical malfunctions and 290 from intentionally set fires.
Smoking materials are especially deadly relative to how few fires they cause. Cigarettes and other lighted tobacco products are responsible for only about 5% of residential fires but 22% of residential fire deaths. A cigarette dropped on a couch or bedding can smolder for a long time before producing flames, often while the person is asleep or impaired. The rate of smoking-related fire deaths has dropped significantly over the past two decades, falling from 0.30 per 100,000 people in 1999 to 0.17 per 100,000 in 2015, closely tracking the decline in adult smoking rates.
Heating Fires Peak in Winter
Heating equipment is another major source of residential fires, with a sharp seasonal pattern. These fires peak in January, when 20% of all annual heating fires occur, and drop to their lowest levels in June, July, and August (just 2% each month). The spike corresponds to heavier use of furnaces, portable heaters, and fireplaces during the coldest weeks of the year.
Among heating fires that spread beyond the equipment itself, five types of devices account for 75% of ignitions: heating stoves (20%), unspecified heating equipment (17%), wall and floor heaters (15%), water heaters (12%), and furnaces (11%). Portable space heaters are a particular concern because they’re often placed too close to curtains, bedding, or furniture.
Electrical Fires and Hidden Wiring Problems
Electrical distribution systems are the third leading cause of home structure fires. Arcing faults, which happen when electricity jumps across damaged or deteriorated wiring, start more than 28,000 home fires each year, killing and injuring hundreds of people and causing over $700 million in property damage. Electrical outlets alone are involved in roughly 5,300 fires annually.
What makes electrical fires particularly dangerous is that they often start inside walls, where frayed wiring or overloaded circuits can smolder undetected. By the time smoke becomes visible, the fire may have already spread through wall cavities. Older homes with outdated wiring systems carry higher risk, especially if the electrical panel hasn’t been upgraded to handle modern power demands.
Intentional Fires Are Increasing
Arson and other intentionally set fires remain a persistent problem. In 2023, an estimated 17,200 residential building fires were set deliberately, and that number represents a 20% increase over the 10-year period from 2014 to 2023. Intentional fires also ranked as the second leading cause of non-residential building fires in 2023, with 14,300 incidents.
Wildfires: A Different Picture
Outside of buildings, the fire landscape shifts dramatically. More than 60% of wildfire ignitions across the western United States are human-caused, and nationally that figure reaches 84%. Lightning accounts for most of the remainder. Human-caused wildfires include everything from unextinguished campfires and discarded cigarettes to sparks from equipment and power lines. Because preventing these ignitions is one of the most effective ways to reduce wildfire risk, public land agencies focus heavily on fire-season restrictions and public education campaigns.
Simple Steps That Prevent the Most Fires
Since cooking dominates fire statistics, the highest-impact prevention habits center on the kitchen. Staying in the room while something is on the stove eliminates the single biggest risk factor. If you need to leave, even briefly, turning off the burner takes two seconds and prevents the most common scenario that leads to a kitchen fire. Keeping pot handles turned toward the back of the stove prevents someone from bumping or pulling a hot pan off the burner.
Watching for smoke or boiling grease is another simple but effective habit. Fires start when heat is too high, and catching that moment before ignition is far easier than dealing with flames. For the other leading causes, working smoke alarms remain the most important safety measure in any home. They don’t prevent fires, but they buy the minutes that save lives.