That said, the legal gambling age in most states is between 18 and 21 and it often varies by gambling activity, which means it could be different for sports betting, the state lottery, or online casinos.US Gambling Age - What Age Can You Legally Gamble in USA?playusa : gambling-agebet e sportsLegal Gambling Age in the US. Must be 21 + to participate.US Legal Gambling Ages by Stategambling : laws : legal-gambling-age-in-the-usbet e sports aposta esportiva gratis