| | Fremont County | IA | 19071 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=FremontCounty+IA |
| | Hancock County | IA | 19081 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=HancockCounty+IA |
| | Henry County | IA | 19087 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=HenryCounty+IA |
| | Humboldt County | IA | 19091 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=HumboldtCounty+IA |
| | Ida County | IA | 19093 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=IdaCounty+IA |
| | Iowa County | IA | 19095 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=IowaCounty+IA |
| | Lee County | IA | 19111 | | Fort Madison, IA 22800 | Burlington-Fort Madison,
IA-IL 161 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=LeeCounty+IA |
| | Louisa County | IA | 19115 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=LouisaCounty+IA |
| | Marion County | IA | 19125 | | Pella, IA 37800 | Des Moines-West Des
Moines-Ames, IA 218 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MarionCounty+IA |
| | Marshall County | IA | 19127 | | Marshalltown, IA 32260 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MarshallCounty+IA |