Home › Venues › Allen County Fair Allen County Fair Tickets Buy tickets for concerts at Allen County Fair in Lima, OH. No Upcoming Events No upcoming events scheduled at Allen County Fair. Please contact us with any corrections. Hotels & Lodging Near Allen County Fair About the Venue Allen County Fair At-a-Glance Address2750 Harding HighwayLima, OH 45804United States Map & Directions Website allencofair.com/Advertisement