One year and $6.6 million in state tax revenue later, nearly every major Colorado casino has adopted a digital sportsbook and many have transformed their gaming floors for amplified in-person betting.īy law, Colorado only permits gambling in the towns of Central City, Black Hawk, and Cripple Creek as well as on Native Reservations. In May of 2020, sportsbook betting officially became legal in the state of Colorado for both in-person and mobile wagers.