| | Columbiana County | OH | 39029 | | Salem, OH 41400 | Youngstown-Warren-Salem,
OH 566 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=ColumbianaCounty+OH |
| | Mahoning County | OH | 39099 | | Youngstown-Warren, OH 49660 | Youngstown-Warren-Salem,
OH 566 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MahoningCounty+OH |
| | Trumbull County | OH | 39155 | | Youngstown-Warren, OH 49660 | Youngstown-Warren-Salem,
OH 566 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=TrumbullCounty+OH |