A total of 2,976 people perished in the September 11, 2001, terrorist attacks in New York, Washington and Pennsylvania, excluding the 19 hijackers. Total insured losses from the terrorist attacks on the World Trade Center in New York City and the Pentagon are about $43.6 billion (in 2015 dollars), including property, life and liability insurance claim costs. Loss estimates may differ from estimates calculated by other organizations. It is the worst terrorist attack on record in terms of fatalities and insured property losses, which totaled about $25.2 billion (in 2015 dollars). The April 15, 2013, Boston Marathon bombing, which killed four people and injured 264, marked the first successful terrorist attack on U.S. soil since the September 11 tragedy. As of April 2014 selected health, property/casualty and workers compensation companies have paid or are projected to pay a total of $24.9 million for medical claims and property damage claims associated with the bombings, according to the Massachusetts Division of Insurance.
Top 20 Costliest Terrorist Acts By Insured Property Losses
(2015 $ millions)