| | | Dallas County | IA | 19049 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=DallasCounty+IA |
| | | Guthrie County | IA | 19077 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=GuthrieCounty+IA |
| | | Jasper County | IA | 19099 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=JasperCounty+Iowa |
| | | Madison County | IA | 19121 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=MadisonCounty+IA |
| | | Polk County | IA | 19153 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PolkCounty+IA |
| | | Warren County | IA | 19181 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=WarrenCounty+IA |
| | | Dubuque County | IA | 19061 | | Dubuque, IA 20220 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=DubuqueCounty+IA |
| | | Webster County | IA | 19187 | | Fort Dodge, IA 22700 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WebsterCounty+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 |
| | | Johnson County | IA | 19103 | | Iowa City, IA 26980 | Cedar Rapids-Iowa City,
IA 168 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=JohnsonCounty+IA |
