| | | Franklin County | ID | 16041 | | Logan, UT-ID 30860 | | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=FranklinCounty+ID |
| | | Fremont County | ID | 16043 | | Rexburg, ID 39940 | Idaho
Falls-Rexburg-Blackfoot,
ID 292 | Outlying | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=FremontCounty+ID |
| | | Gem County | ID | 16045 | | Boise City, ID 14260 | Boise City-Mountain
Home-Ontario, ID-OR 147 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=GemCounty+ID |
| | | Gooding County | ID | 16047 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=GoodingCounty+ID |
| | | Idaho County | ID | 16049 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=IdahoCounty+ID |
| | | Jefferson County | ID | 16051 | | Idaho Falls, ID 26820 | Idaho
Falls-Rexburg-Blackfoot,
ID 292 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=JeffersonCounty+ID |
| | | Jerome County | ID | 16053 | | Twin Falls, ID 46300 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=JeromeCounty+ID |
| | | Kootenai County | ID | 16055 | | Coeur d'Alene, ID 17660 | Spokane-Spokane
Valley-Coeur
d'Alene, WA-ID 518 | Central | metro county (urban) | recreation | https://maps.google.com/?q=KootenaiCounty+ID |
| | | Latah County | ID | 16057 | | Moscow, ID 34140 | Pullman-Moscow, WA-ID 446 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LatahCounty+ID |
| | | Lemhi County | ID | 16059 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LemhiCounty+ID |
