Booz Allen Hamilton Holding Corporation revenue for the last year amounted to 10.66 B USD, the most of which — 5.06 B USD — came from its highest performing source at the moment, Defense Clients, the year earlier bringing 4.21 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Booz Allen Hamilton Holding Corporation 10.49 B USD, and the year before that — 9.03 B USD.