174th Montgomery County Fair

2026-07-14 — Dayton, OH. 2026 Montgomery County Fair - Check out our NEW DATES! The 174th Montgomery County Fair is July 14th - 19th at the Montgomery County Fairgrounds Summer's biggest celebration is just around the corner! This year's theme, "Country Fair Traditions for America's Big Birthday," promises a week-long celebration of community, agriculture, and summertime fun that you won't want to miss! Check out our...