Tribal Casino tax revenue: (View the larger map here)
Source: Oklahoma Office of State Finance
Indian gaming generated more than $26.7 billion in gross revenue in 2008 at about 400 tribal casinos and bingo halls, according to the National Indian Gaming Commission. The two regions that include parts of Oklahoma showed the strongest growth over 2007, netting about $3 billion. Oklahoma is home to 104 gaming operations in the region that also includes Texas and Kansas, according to the commission’s figures. Those states have only six gaming operations.