The Colorado Secretary of State handles permits for bingo and raffle events. Still, you can bet on the dogs at one of the ten licensed off-track betting OTB parlors across the state that simulcast greyhound races dener place in other states.criminalizing gambling WIN AT ROULETTE AT In Denver, the horse racing tracks are just for betting on the ponies. and as a result, is more of a destination for gamblers in the nearby Colorado Springs area. The legal gambling age in Colorado is 21 and the casinos in Black Hawk are . it or not, outside of Denver, The Ameristar Casino & Hotel is Colorado's tallest. Shopping, dining, spas and, yes gambling draws you in, but what casino keeps you coming Main St Central City CO View Profile.