2025 Darke County Fair Dates. Organizers have announced the headliner for next year’s darke county fair. The great darke county fair and fairgrounds have been a treasured part of the community since it was established in 1853.

21,792 likes · 1,039 talking about this · 44,624 were here. The great darke county fair august 17, 2025 8:00 pm doors open: