The age limit ranges from 18 to 21 years old, depending on the location. The legal age for gambling in a casino can vary based on the state, country, or region you're in. Whether you're heading to a physical casino or playing at your favorite online casino, it's crucial to know the legal age limit in your jurisdiction to avoid any legal or financial consequences. As the world of online and offline gambling continues to evolve, one key factor remains constant: the legal age requirement for casino gaming.