| | Doddridge County | WV | 54017 | | Clarksburg, WV 17220 | Fairmont-Clarksburg, WV 242 | Outlying | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=DoddridgeCounty+WV |
| | Harrison County | WV | 54033 | | Clarksburg, WV 17220 | Fairmont-Clarksburg, WV 242 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=HarrisonCounty+WV |
| | Marion County | WV | 54049 | | Fairmont, WV 21900 | Fairmont-Clarksburg, WV 242 | Central | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=MarionCounty+WV |
| | Taylor County | WV | 54091 | | Clarksburg, WV 17220 | Fairmont-Clarksburg, WV 242 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=TaylorCounty+WV |