Chicago is the largest city in Illinois and home to one of CNN Money's 100 fastest-growing companies. Manufacturing giant Boeing has seen a 4.7% rate of growth over the past three years, and is expected to see continued success with the introduction of its ultra-fuel-efficient 787 Dreamliner.

Information Technology in Illinois

Chicago's population far outnumbers the other cities in Illinois, though cities like Aurora and Rockford offer career opportunities for graduates of the many IT training programs in the state. Students in Illinois' local career training programs can train for careers in computer networking, information systems management and security. Illinois' information industry employs 116,200 people in the state, according to the Bureau of Labor Statistics. Nationwide growth in the IT industry is likely to have a positive effect on careers within Illinois, particularly in larger markets such as Chicago.