79 passengers 11 crew members aboard American Airlines Flight 11

51 passengers 9 crew members aboard United Airlines Flight 175

53 passengers 6 crew members aboard American Airlines Flight 77

33 passengers 7 crew members aboard United Airlines Flight 93

343 New York City Fire Department firefighters  

23 New York City Police Department officers

37 Port Authority Police Department

15 EMTs

125 in the Pentagon (70 civilians; 55 military personnel)

3 Court Officers.

A K9 dog named Sirius

2,977 fatalities