Home › Venues › Mercer County Fairgrounds Mercer County Fairgrounds Tickets Buy tickets for concerts at Mercer County Fairgrounds in Celina, OH. No Upcoming Events No upcoming events scheduled at Mercer County Fairgrounds. Please contact us with any corrections. Hotels & Lodging Near Mercer County Fairgrounds About the Venue Mercer County Fairgrounds At-a-Glance Address1001 West Market StreetCelina, OH 45822United States Map & Directions Advertisement