The 2010 Inc. 5000: Top 10 Companies by Revenue
Booz Allen Hamilton
2009 Revenue: $5.1 billion
Three-Year Growth: 59.62%
Founded almost a century ago by Edwin Booz in Chicago, Booz Allen Hamilton is one of the nation's oldest and largest management consulting firms. The company provides strategy and technology consulting primarily to federal government agencies. The firm employs 23,000 people, led by chairman and CEO Dr. Ralph Shrader.