| | Butler County | PA | 42019 | | Pittsburgh, PA 38300 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ButlerCounty+PA |
| | Cambria County | PA | 42021 | | Johnstown, PA 27780 | Johnstown-Somerset, PA 306 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=CambriaCounty+PA |
| | Centre County | PA | 42027 | | State College, PA 44300 | State College-DuBois, PA 524 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=CentreCounty+PA |
| | Chester County | PA | 42029 | Montgomery County-Bucks
County-Chester County, PA 33874 | Philadelphia-Camden-Wilmington,
PA-NJ-DE-MD 37980 | Philadelphia-Reading-Camden,
PA-NJ-DE-MD 428 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ChesterCounty+PA |
| | Clearfield County | PA | 42033 | | DuBois, PA 20180 | State College-DuBois, PA 524 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=ClearfieldCounty+PA |
| | Clinton County | PA | 42035 | | Lock Haven, PA 30820 | Williamsport-Lock Haven,
PA 558 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ClintonCounty+PA |
| | Columbia County | PA | 42037 | | Bloomsburg-Berwick, PA 14100 | Bloomsburg-Berwick-Sunbury,
PA 146 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ColumbiaCounty+PA |
| | Crawford County | PA | 42039 | | Meadville, PA 32740 | Erie-Meadville, PA 240 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CrawfordCounty+PA |
| | Cumberland County | PA | 42041 | | Harrisburg-Carlisle, PA 25420 | Harrisburg-York-Lebanon,
PA 276 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=CumberlandCounty+PA |
| | Dauphin County | PA | 42043 | | Harrisburg-Carlisle, PA 25420 | Harrisburg-York-Lebanon,
PA 276 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=DauphinCounty+PA |