Il County Fairs 2024 Tickets. The 2025 illinois state fair runs from august 7th through august 17th. Illinois county fairs showcase our state’s rich agricultural history, while preparing and educating our youth and future leaders of tomorrow.
Check out our fair schedule of events to find out when and where it’s all happening so you can make your 2024 mchenry county. The fairgrounds are open from 7 a.m.