Pennsylvania, state in the northeastern United States. There are 67 county in Pennsylvania. You can find the list of these counties and detailed information from the links below.
With 67 counties, Pennsylvania has one of the largest county systems in the United States. Here is an overview of some notable counties across the Keystone State:
Allegheny County
Philadelphia County
Delaware County
Montgomery County
Lancaster County
From the history of Philadelphia to the Amish communities, Pennsylvania's diverse counties each contribute unique local flavor and sights. Natural beauty and thriving cities can all be found among the counties of the state.