Washington State has 32 Indian casinos owned by 23 tribes. Find maps, photos Vegas-style slots coming to Snohomish County Port Casino List · Ilani Casino Resort · Indian Casinos by Cities. Washington casinos and gambling information including poker tournaments, slots info, pari-mutuel All in all you will find over 30, slot machines in the state. This includes Casino Resorts, indian casinos in Washington, racinos/pari mutuels. All of the state's Tribes are not required to release information on their slot.