For example, you might be able to purchase lottery tickets at age 18 but cannot enter a commercial casino until you’re 21. However, many jurisdictions have different minimum ages for each type of gambling. Most states set the legal gambling age to either 18 or 21. As there are no federal laws that specify a minimum age, all jurisdictions set their own legal minimum as decided by state lawmakers. The legal age for gambling in the US varies between states. ˣ Legal but not operational/unavailable in the state.NONE No legal gambling age specified in state law.accompanied by an adut or for games with non-monetary prizes) ˠ Minors can participate under certain situations (e.g.~ Only online poker is legal no online slots or table games.* Casinos serving alcohol impose a 21+ limit.