Revenue at Greektown Casino-Hotel and MotorCity Casino Hotel fell compared with the same month last year, while MGM Grand Detroit saw an increase of 2 percent over last July to $51.2 million.
Greektown's monthly revenue decreased 1.4 percent to $27.3 million and MotorCity's fell 0.2 percent to $40.5 million.
The casinos paid $9.64 million in gaming taxes to the state in July, compared with $9.6 million last year, according to the report. They also sent the city of Detroit $14.2 million in wagering taxes and development agreement payments.