| | Mitchell County | IA | 19131 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MitchellCounty+IA |
| | Monroe County | IA | 19135 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MonroeCounty+IA |
| | Muscatine County | IA | 19139 | | Muscatine, IA 34700 | Davenport-Moline, IA-IL 209 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MuscatineCounty+IA |
| | Plymouth County | IA | 19149 | | Le Mars, IA 30180 | Sioux City-Le Mars,
IA-NE-SD 512 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=PlymouthCounty+IA |
| | Sioux County | IA | 19167 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=SiouxCounty+IA |
| | Union County | IA | 19175 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=UnionCounty+IA |
| | Van Buren County | IA | 19177 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=VanBurenCounty+IA |
| | Wapello County | IA | 19179 | | Ottumwa, IA 36900 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=WapelloCounty+IA |
| | Wayne County | IA | 19185 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=WayneCounty+IA |
| | Adair County | IA | 19001 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=AdairCounty+IA |