Concert Venues in Dubuque Five Flags Center - Theatre Where: 405 Main Street, Dubuque, Iowa - 52001 Events: 16 Five Flags Center - Arena Where: 405 Main Street, Dubuque, Iowa - 52001 Events: 10 Back Waters Stage at Q Casino and Hotel Where: 1855 Greyhound Park Rd., Dubuque, Iowa - 52001 Events: 3 Mississippi Moon Bar - Diamond Jo Casino Where: 301 Bell Street, Dubuque, Iowa - 52001 Events: 3 Dubuque County Fair Where: 14569 Old Highway Road, Dubuque, Iowa - 52002 Events: 2