(That designation goes to the Venetian Macao, just off the coast of China, with 546,000 square feet of gaming space). Biggest Casino in OklahomaĪt around 400,000 square feet of gaming space, the WinStar’s casino square footage puts several thousand feet shy of being the largest in the world. The resort also draws in gamblers from nearby Oklahoma City, which is around 127 miles away. The populous suburbs in north Dallas are just an hour or less away. In fact, it’s the closest casino to Dallas. Worth, as the casino is just 80 miles away from the heart of Dallas. It annually brings in hundreds of thousands of visitors from Dallas and Ft. The internationally themed complex is shaped like a backwards “7.” It has sections of the casino that represent several different international exterior motifs based on various cities of the world, (i.e. The resort as a whole is much more enormous. Yet of the 102, the WinStar World Casino stands tall as by far the largest casino in all of Oklahoma. Currently there are 102 casinos in Oklahoma, with more on the way. With over $4 billion in annual gaming revenue, Oklahoma’s gambling market is booming. The WinStar is the largest casino in Oklahoma