• Alcona
• Alger
• Allegan
• Alpena
• Antrim
• Arenac
• Baraga
• Barry
• Bay
• Benzie
• Berrien
• Branch
• Calhoun
• Cass
• Charlevoix
• Cheboygan
• Chippewa
• Clare
• Clinton
• Crawford
• Delta
• Dickinson
• Eaton
• Emmet
• Genesee
• Gladwin
• Gogebic
• Grand Traverse
• Gratiot
• Hillsdale
• Houghton
• Huron
• Ingham
• Ionia
• Iosco
• Iron
• Isabella
• Jackson
• Kalamazoo
• Kalkaska
• Kent
• Keweenaw
• Lake
• Lapeer
• Leelanau
• Lenawee
• Livingston
• Luce
• Mackinac
• Macomb
• Manistee
• Marquette
• Mason
• Mecosta
• Menominee
• Midland
• Missaukee
• Monroe
• Montcalm
• Montmorency
• Muskegon
• Newaygo
• Oakland
• Oceana
• Ogemaw
• Ontonagon
• Osceola
• Oscoda
• Otsego
• Ottawa
• Presque Isle
• Roscommon
• Saginaw
• St. Clair
• St. Joseph
• Sanilac
• Schoolcraft
• Shiawassee
• Tuscola
• Van Buren
• Washtenaw
• Wayne
• Wexford

These counties cover a diverse range of geographic and climatic conditions, from the industrial and urban areas of the southeast to the forests and lakes of the Upper Peninsula.