Colorado legalized sports betting on May 1st, 2020. They offer full mobile betting, meaning you can bet from a mobile betting app on your phone, computer, or tablet. Several big names like DraftKings, FanDuel, and BetMGM entered the market at launch causing Colorado to quickly become one of the most user-friendly markets for bettors. Expect to see more operators open up in Colorado as their tax rate is only 10% and each book only pays a $54,000 operating fee.