What are you required to have before purchasing alcohol in Pennsylvania?

To purchase alcohol in Pennsylvania, you must be at least 21 years old and present a valid government-issued photo ID that shows your date of birth, such as a driver's license, non-driver's ID, passport, or military ID. If you appear to be under the age of 35, the cashier or server may ask for additional proof of age. It is against the law to sell, serve, or furnish alcohol to anyone under the age of 21 in Pennsylvania.