Blaine County Fairgrounds Chinook, MT Email Address: Blaine County Fairgrounds 300 Cleveland Rd Chinook, MT Info: 406-262-3185 Region: Great Falls Upcoming events at Blaine County Fairgrounds Mar 20 Fri Dinner Theatre - Baskerville: A Sherlock Holmes Mystery Mar 20 - Mar 21 Chinook Blaine County Fairgrounds Comedy Performing Arts Theatre