Linn County Fair
201 Central City Road
City/State/Zip: Central City, Iowa 52214
County: Linn County
June 27 – July 2, 2018. TONS of events all week including fireworks (which is a Grandstand Event, after the Lonestar concert), there will be a carnival and all the usual fair events. Check the event site link for the full schedule. There are various fees for the concerts and other stuff, but the fireworks will be free.
Note: I am not affiliated with this event, I only list them; if you have a specific question, please use the contact information provided to get in touch with them directly