| | Albany County | WY | 56001 | | Laramie, WY 29660 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=AlbanyCounty+WY |
| | Big Horn County | WY | 56003 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=BigHornCounty+WY |
| | Campbell County | WY | 56005 | | Gillette, WY 23940 | | Central | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=CampbellCounty+WY |
| | Carbon County | WY | 56007 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CarbonCounty+WY |
| | Converse County | WY | 56009 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=ConverseCounty+WY |
| | Crook County | WY | 56011 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=CrookCounty+WY |
| | Fremont County | WY | 56013 | | Riverton, WY 40180 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=FremontCounty+WY |
| | Goshen County | WY | 56015 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=GoshenCounty+WY |
| | Hot Springs County | WY | 56017 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=HotSpringsCounty+WY |
| | Johnson County | WY | 56019 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=JohnsonCounty+WY |