In Pennsylvania, the legal age to enter a casino is 21 years old. This age requirement applies to both online and land-based casinos in the state. Individuals under 21 are not permitted to gamble or be present on the gaming floor. Casinos in Pennsylvania strictly enforce age restrictions to comply with state laws and regulations. It is essential to carry a valid form of identification to prove your age when visiting a casino in Pennsylvania. Make sure to meet the minimum age requirement before attempting to enter a casino in the state.