In 2011, an estimated 17,800 reported fires were started by fireworks. These fires resulted in an estimated 40 civilian injuries and $32 million in direct property damage, with no reported fire deaths.
During 2007-2011, 91% of the average of 19,700 fires associated with fireworks per year occurred outside any structure or vehicle. The largest numbers of these outdoor fires associated with fireworks involved grass fires (6,800 per year), brush fires (4,500), dumpster fires (1,700), unclassified or unknown-type natural or vegetation fires (1,300) and other outside trash, rubbish, or waste fires (1,200).
In 2007-2011, four people per year were killed in fires started by fireworks, while data from death certificates show that five people per year were killed directly by fireworks. These estimates may overlap, because fireworks can directly kill someone while also starting a fatal fire.
Using 2000-2010 data, the risk of fire death relative to hours of usage is higher for fireworks than for cigarettes. On Independence Day in a typical year, fireworks account for two out of five of all reported fires, more than any other cause of fire.
References
1. Hall, J. R. 2013 NFPA's "Fireworks". National Fire Protection Association Available at URL: http://www.nfpa.org/research/reports-and-statistics/fire-causes/fireworks
2. Consumer Product Safety Commission. Available at URL: http://www.cpsc.gov/en/safety-education/safety-education-centers/fireworks