Fatalities included the following:
- Everyone aboard the four hijacked planes. Including the hijackers, this includes 76 passengers and 11 crew members aboard American Airlines Flight 11; 49 passengers and 11 crew members aboard United Airlines Flight 175; 53 passengers and 6 crew members aboard American Airlines Flight 77; and 33 passengers and 7 crew members aboard United Airlines Flight 93.
- 2,606 in New York City in the towers and on the ground:
- This includes 343 New York City Fire Department firefighters, including one FDNY Fire Chaplain, Franciscan Fr. Mychal Judge, 23 New York City Police Department officers, and 37 Port Authority Police Department officers. Casualties of the 9/11 attacks also included 15 EMTs and 3 Court Officers. Approximately 2,000 first responders were also injured in the attacks.
- 1,366 people died who were at or above the floors of impact in the North Tower (1 WTC); according to the Commission Report, hundreds were killed instantly by the impact while the rest were trapped and died after the tower collapsed (though a few people were pulled from the rubble, none of them were from above the impact zone).
- As many as 600 people were killed instantly or trapped at or above the floors of impact in the South Tower (2 WTC). Only about 18 managed to escape in time from above and in the impact zone and out of the South Tower before it collapsed.
- About 292 people were killed at street level by burning debris and falling bodies of those who had jumped from the World Trade Center's windows.
- A bomb sniffing dog named Sirius (not included in above total).
- 125 in the Pentagon