Diamond Jo Casino

Diamond Jo
Diamond Jo Casino in the foreground; the Dubuque-Wisconsin Bridge is at the upper right.
Address 301 Bell Street
Dubuque, Iowa 52001
Opening dateDecember 11, 2008
ThemeLas Vegas
Total gaming space35,000 sq ft (3,300 m2)
Casino typeLand
OwnerBoyd Gaming
Coordinates42°29′49″N 90°39′34″W / 42.49695°N 90.659444°W / 42.49695; -90.659444
Websitediamondjo.com

The Diamond Jo Casino is a gambling casino and entertainment complex located in the Port of Dubuque, in Dubuque, Iowa. The casino is owned and operated by Las Vegas-based Boyd Gaming, which also owns the Diamond Jo Casino - Worth in Northwood, Iowa. It is a member of the Iowa Gaming Association, and its license is held by the Dubuque Racing Association, which operates Q Casino. Beginning operations on May 18, 1994, the Diamond Jo was a 3-level, 305-foot (93 m), 1,500-passenger vessel in Dubuque's Ice Harbor. The boat was a dockside that did not cruise, the casino became land-based when its new facility opened December 11, 2008.

The Diamond Jo Casino is located at 301 Bell Street, in the rapidly developing Port of Dubuque. The casino, along with the nearby National Mississippi River Museum & Aquarium and other attractions, have helped to create a large and growing tourism market in Dubuque.