| | | Wright County | IA | 19197 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=WrightCounty+IA |
| | | Boone County | IA | 19015 | | Ames, IA 11180 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=BooneCounty+Iowa |
| | | Story County | IA | 19169 | | Ames, IA 11180 | Des Moines-West Des
Moines-Ames, IA 218 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=StoryCounty+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 |
| | | Carroll County | IA | 19027 | | Carroll, IA 16140 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CarrollCounty+IA |
| | | Benton County | IA | 19011 | | Cedar Rapids, IA 16300 | Cedar Rapids-Iowa City,
IA 168 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=BentonCounty+IA |
| | | Jones County | IA | 19105 | | Cedar Rapids, IA 16300 | Cedar Rapids-Iowa City,
IA 168 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=JonesCounty+IA |
| | | Linn County | IA | 19113 | | Cedar Rapids, IA 16300 | Cedar Rapids-Iowa City,
IA 168 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=LinnCounty+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 |
| | | Scott County | IA | 19163 | | Davenport-Moline-Rock
Island, IA-IL 19340 | Davenport-Moline, IA-IL 209 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ScottCounty+IA |
