Home › Venues › Mariposa County Fairgrounds Mariposa County Fairgrounds Tickets Buy tickets for concerts at Mariposa County Fairgrounds in Mariposa, CA. No Upcoming Events No upcoming events scheduled at Mariposa County Fairgrounds. Please contact us with any corrections. Hotels & Lodging Near Mariposa County Fairgrounds About the Venue Mariposa County Fairgrounds At-a-Glance Address5007 Fairgrounds RdMariposa, CA 95338United States Map & Directions Advertisement