| | | Dubuque County | IA | 19061 | | Dubuque, IA 20220 | | Central | in metro of < 250k | nonspecialized | https://maps.google.com/?q=DubuqueCounty+IA |
| | | Emmet County | IA | 19063 | | | | | not in metro; pop > 5K
< 20k;
non-metro-adjacent | nonspecialized | https://maps.google.com/?q=EmmetCounty+IA |
| | | Fayette County | IA | 19065 | | | | | not in metro; pop > 5k
< 20k; metro-adjacent | nonspecialized | https://maps.google.com/?q=FayetteCounty+IA |
| | | Floyd County | IA | 19067 | | | | | not in metro; pop > 5K
< 20k;
non-metro-adjacent | manufacturing-dependent | https://maps.google.com/?q=FloydCounty+IA |
| | | Franklin County | IA | 19069 | | | | | not in metro; pop <
5k; non-metro-adjacent | farm-dependent | https://maps.google.com/?q=FranklinCounty+IA |
| | | Fremont County | IA | 19071 | | | | | not in metro; pop <
5k; metro-adjacent | manufacturing-dependent | https://maps.google.com/?q=FremontCounty+IA |
| | | Greene County | IA | 19073 | | | | | not in metro; pop <
5k; metro-adjacent | farm-dependent | https://maps.google.com/?q=GreeneCounty+IA |
| | | Grundy County | IA | 19075 | | Waterloo-Cedar Falls, IA 47940 | | Outlying | in metro of < 250k | farm-dependent | https://maps.google.com/?q=GrundyCounty+IA |
| | | Guthrie County | IA | 19077 | | Des Moines-West Des
Moines, IA 19780 | Des Moines-West Des
Moines-Ames, IA 218 | Outlying | in metro of > 250k
< 1m | farm-dependent | https://maps.google.com/?q=GuthrieCounty+IA |
| | | Hamilton County | IA | 19079 | | | | | not in metro; pop > 5k
< 20k; metro-adjacent | farm-dependent | https://maps.google.com/?q=HamiltonCounty+IA |
