| | Black Hawk County | IA | 19013 | | Waterloo-Cedar Falls, IA 47940 | | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BlackHawkCounty+IA |
| | Buena Vista County | IA | 19021 | | Storm Lake, IA 44740 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=BuenaVistaCounty+IA |
| | Cherokee County | IA | 19035 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CherokeeCounty+IA |
| | Chickasaw County | IA | 19037 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ChickasawCounty+IA |
| | Clarke County | IA | 19039 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ClarkeCounty+IA |
| | Clinton County | IA | 19045 | | Clinton, IA 17540 | Davenport-Moline, IA-IL 209 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ClintonCounty+IA |
| | Crawford County | IA | 19047 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CrawfordCounty+IA |
| | Delaware County | IA | 19055 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=DelawareCounty+IA |
| | Des Moines County | IA | 19057 | | Burlington, IA-IL 15460 | Burlington-Fort Madison,
IA-IL 161 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=DesMoinesCounty+IA |
| | Floyd County | IA | 19067 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=FloydCounty+IA |