| | | 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 |
| | | Berrien County | MI | 26021 | | Niles, MI 35660 | South
Bend-Elkhart-Mishawaka,
IN-MI 515 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BerrienCounty+MI |
| | | Calhoun County | MI | 26025 | | Battle Creek, MI 12980 | Kalamazoo-Battle
Creek-Portage, MI 310 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=CalhounCounty+MI |
| | | Cass County | MI | 26027 | | South Bend-Mishawaka,
IN-MI 43780 | South
Bend-Elkhart-Mishawaka,
IN-MI 515 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=CassCounty+MI |
| | | Clinton County | MI | 26037 | | Lansing-East Lansing, MI 29620 | Lansing-East
Lansing-Owosso, MI 330 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ClintonCounty+MI |
| | | Eaton County | MI | 26045 | | Lansing-East Lansing, MI 29620 | Lansing-East
Lansing-Owosso, MI 330 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=EatonCounty+MI |
| | | Genesee County | MI | 26049 | | Flint, MI 22420 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=GeneseeCounty+MI |
| | | Ingham County | MI | 26065 | | Lansing-East Lansing, MI 29620 | Lansing-East
Lansing-Owosso, MI 330 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=InghamCounty+MI |
| | | Jackson County | MI | 26075 | | Jackson, MI 27100 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=JacksonCounty+MI |
