The clock is ticking: Counties press Colorado to reopen casinos Matt Rybaltowski, CO Bets · June 5, 2020 at 7:11 am As the nation enters its fourth month in the fight against COVID-19, casinos in nearly a dozen states are gradually opening their doors. At its peak, the coronavirus pandemic led to the temporary closure of all 989 casinos nationwide, comprising both tribal and commercial properties. As of June 4, 494 casinos had resumed operations, according to the American Gaming Association, with more than 100 reopening this week alone. In Colorado, however, retail casinos remain shuttered much to the dismay of county leaders in the historic mining settlements that host gaming in the state. Thousands of furloughed gaming employees are on edge as the casinos burn through millions in losses per month.