The St. Charles Convention Center is a convention center in St. Charles, Missouri. It opened in April 2005 and is managed by Spectra. The facility has a 16,200 sq ft (1,510 m2). Grand Ballroom, and 27,600 sq ft (2,560 m2). of Exhibit Hall space expandable to 35,700 sq ft (3,320 m2). through the adjacent Junior Ballroom. The facility features additional meeting rooms, Executive Board Room, and the Compass Café. Other major partners include Coca-Cola, MillerCoors, Yellow Pages, New Frontier Bank, Women's Journals, and Goellner Printing.