Illinois 18 Sept 14, 2007 17:45:44 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by bot on Sept 14, 2007 17:45:44 GMT -5 The 18th Congressional District of Illinois covers central and western Illinois, including the cities of Jacksonville, Peoria, and Springfield. It is represented by Aaron Schock.en.wikipedia.org/wiki/Illinois%27s_18th_congressional_district