| | Bedford County | PA | 42009 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=BedfordCounty+PA |
| | Bradford County | PA | 42015 | | Sayre, PA 42380 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=BradfordCounty+PA |
| | Cameron County | PA | 42023 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CameronCounty+PA |
| | Clarion County | PA | 42031 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=ClarionCounty+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 |
| | Crawford County | PA | 42039 | | Meadville, PA 32740 | Erie-Meadville, PA 240 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CrawfordCounty+PA |
| | Elk County | PA | 42047 | | St. Marys, PA 41260 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ElkCounty+PA |
| | Forest County | PA | 42053 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=ForestCounty+PA |
| | Fulton County | PA | 42057 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=FultonCounty+PA |