| | | 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 |
| | | Lapeer County | MI | 26087 | Warren-Troy-Farmington
Hills, MI 47664 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=LapeerCounty+MI |
| | | Lenawee County | MI | 26091 | | Adrian, MI 10300 | Detroit-Warren-Ann Arbor,
MI 220 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=LenaweeCounty+MI |
| | | Livingston County | MI | 26093 | Warren-Troy-Farmington
Hills, MI 47664 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=LivingstonCounty+MI |
| | | Macomb County | MI | 26099 | Warren-Troy-Farmington
Hills, MI 47664 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=MacombCounty+MI |
| | | Monroe County | MI | 26115 | | Monroe, MI 33780 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MonroeCounty+MI |
| | | Oakland County | MI | 26125 | Warren-Troy-Farmington
Hills, MI 47664 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=OaklandCounty+MI |
| | | St. Clair County | MI | 26147 | Warren-Troy-Farmington
Hills, MI 47664 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.ClairCounty+MI |
| | | Washtenaw County | MI | 26161 | | Ann Arbor, MI 11460 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=WashtenawCounty+MI |
| | | Wayne County | MI | 26163 | Detroit-Dearborn-Livonia,
MI 19804 | Detroit-Warren-Dearborn,
MI 19820 | Detroit-Warren-Ann Arbor,
MI 220 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=WayneCounty+MI |
