Mercer County Fair 2025 Schedule. Mercer county fair & horse. Join us for the 197th mercer county fair and horse show, where spectators can enjoy some of the best american saddlebreds, roadsters and hackneys in the country!

Join us for the 197th mercer county fair and horse show, where spectators can enjoy some of the best american saddlebreds, roadsters and hackneys in the country! You won’t want to miss out!.