Pennsylvania, officially the Commonwealth of Pennsylvania, is a state located in the northeastern, Great Lakes and Mid-Atlantic regions of the United States. Keystone State. Proudly founded in 1681 as a place of tolerance and freedom. Pennsylvania was founded as a commonwealth for the common good. It has become the ideological compass for our American values of freedom tolerance, and individual rights. Today, Pennsylvania continues to lead the way for successful businesses and communities with innovation, imagination, and our legendary can-do spirit. It’s truly a state where you can Work Smart. Live Happy.