| | Hill County | MT | 30041 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=HillCounty+MT |
| | Jefferson County | MT | 30043 | | Helena, MT 25740 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=JeffersonCounty+MT |
| | Judith Basin County | MT | 30045 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=JudithBasinCounty+MT |
| | Lake County | MT | 30047 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=LakeCounty+MT |
| | Lewis and Clark County | MT | 30049 | | Helena, MT 25740 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LewisandClarkCounty+MT |
| | Liberty County | MT | 30051 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=LibertyCounty+MT |
| | Lincoln County | MT | 30053 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LincolnCounty+MT |
| | Madison County | MT | 30057 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=MadisonCounty+MT |
| | McCone County | MT | 30055 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=McConeCounty+MT |
| | Meagher County | MT | 30059 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=MeagherCounty+MT |