Booz Allen Hamilton Holding Corporation revenue for the last year amounted to 9.26 B USD, the most of which — 4.21 B USD — came from its highest performing source at the moment, Defense Clients, the year earlier bringing 3.96 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Booz Allen Hamilton Holding Corporation 9.03 B USD, and the year before that — 8.15 B USD.