Sept. 10-12 Cedar Rapids, Hawkeye Downs
Sept. 18-19 Westphalia, Fire Dept. Gun Show, St. Boniface Parish Ctr
Sept. 24-26 Des Moines, Iowa State Fairgrounds
*** I get this list from the link below and other searches and I can't guarantee the accuracy of the list. If anyone notices a show that needs to be corrected, please let me know in the comments.
For more details go to Iowa Gun Shows