| | | Ashland County | OH | 39005 | | Ashland, OH 11740 | Mansfield-Ashland-Bucyrus,
OH 360 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=AshlandCounty+OH |
| | | Athens County | OH | 39009 | | Athens, OH 11900 | Columbus-Marion-Zanesville,
OH 198 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=AthensCounty+OH |
| | | Logan County | OH | 39091 | | Bellefontaine, OH 13340 | Columbus-Marion-Zanesville,
OH 198 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=LoganCounty+OH |
| | | Crawford County | OH | 39033 | | Bucyrus, OH 15340 | Mansfield-Ashland-Bucyrus,
OH 360 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CrawfordCounty+OH |
| | | Guernsey County | OH | 39059 | | Cambridge, OH 15740 | Columbus-Marion-Zanesville,
OH 198 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=GuernseyCounty+OH |
| | | Carroll County | OH | 39019 | | Canton-Massillon, OH 15940 | Cleveland-Akron-Canton,
OH 184 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=CarrollCounty+OH |
| | | Stark County | OH | 39151 | | Canton-Massillon, OH 15940 | Cleveland-Akron-Canton,
OH 184 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=StarkCounty+OH |
| | | Mercer County | OH | 39107 | | Celina, OH 16380 | Lima-Van Wert-Celina, OH 338 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MercerCounty+OH |
| | | Ross County | OH | 39141 | | Chillicothe, OH 17060 | Columbus-Marion-Zanesville,
OH 198 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=RossCounty+OH |
| | | Brown County | OH | 39015 | | Cincinnati, OH-KY-IN 17140 | Cincinnati-Wilmington,
OH-KY-IN 178 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=BrownCounty+OH |
