Major cities in the state are Rockford, Aurora, Joliet, Springfield, Naperville, Peoria, Waukegan, Elgin and Champaign. Illinois is one of the best Midwestern states in the US with 12,801,539 habitants since 2016. On January 1, 2017, the plate code for the state remains AA and later in February vehicle owners makes use of AJ, and AG. ISBE is the primary support for education in the state. Take a trip to beautiful areas of the state such as Galena, Mount Carroll, Fulton, Morris, and Greenville.