The other two tabs categorize county names in two different ways. Choose the Name Types tab to see which counties are named after people, places and other things. Choose the Name Cultures tab to see which county names come from Native American, English and other cultural origins.
Pennsylvania did not establish all of its counties at once. In fact, it took almost 200 years for them to gradually come into existence.
| Founding Dates | Oldest | 1682: Philadelphia, Bucks, Chester | Newest | 1878: Lackawanna |
|---|---|---|---|---|
| Sizes (area) | Largest | 1,244 sq. miles: Lycoming | Smallest | 132 sq. miles: Montour |
| Population | Most Populated | 1,517,550: Philadelphia | Least Populated | 4,946: Forest |
Data source: Wikipedia, 2017.
Note: The county data depicted here are taken almost verbatim from the Wikipedia source, who in turn obtained the
content from a Pennsylvania Historical and Museum Commission webpage that no longer exists.
US maps source: Esri, Inc..
PA map source: PA Spatial Data Access.
Map and webpage created by: Dr. Geiger, 2017.