| | Noble County | OH | 39121 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=NobleCounty+OH |
| | Ottawa County | OH | 39123 | | Sandusky, OH 41780 | Cleveland-Akron-Canton,
OH 184 | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=OttawaCounty+Ohio |
| | Paulding County | OH | 39125 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PauldingCounty+OH |
| | Perry County | OH | 39127 | | Columbus, OH 18140 | Columbus-Marion-Zanesville,
OH 198 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=PerryCounty+OH |
| | Pickaway County | OH | 39129 | | Columbus, OH 18140 | Columbus-Marion-Zanesville,
OH 198 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=PickawayCounty+OH |
| | Pike County | OH | 39131 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PikeCounty+OH |
| | Portage County | OH | 39133 | | Akron, OH 10420 | Cleveland-Akron-Canton,
OH 184 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=PortageCounty+OH |
| | Preble County | OH | 39135 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PrebleCounty+OH |
| | Putnam County | OH | 39137 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PutnamCounty+OH |
| | Richland County | OH | 39139 | | Mansfield, OH 31900 | Mansfield-Ashland-Bucyrus,
OH 360 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=RichlandCounty+OH |