| | Alcona County | MI | 26001 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=AlconaCounty+MI |
| | Alger County | MI | 26003 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=AlgerCounty+MI |
| | Allegan County | MI | 26005 | | Holland, MI 26090 | Grand Rapids-Wyoming, MI 266 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=AlleganCounty+MI |
| | Alpena County | MI | 26007 | | Alpena, MI 10980 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=AlpenaCounty+MI |
| | Antrim County | MI | 26009 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=AntrimCounty+MI |
| | Arenac County | MI | 26011 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=ArenacCounty+MI |
| | Baraga County | MI | 26013 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=BaragaCounty+MI |
| | Barry County | MI | 26015 | | Grand
Rapids-Wyoming-Kentwood,
MI 24340 | Grand Rapids-Wyoming, MI 266 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BarryCounty+MI |
| | Bay County | MI | 26017 | | Bay City, MI 13020 | Saginaw-Midland-Bay City,
MI 474 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BayCounty+MI |
| | Benzie County | MI | 26019 | | Traverse City, MI 45900 | | Outlying | nonmetro county (rural) | recreation | https://maps.google.com/?q=BenzieCounty+MI |