Region 1
Upper Peninsula

Region 2
Alcona
Alpena
Antrim
Benzie
Charlevoix
Cheboygan
Crawford
Emmet
Grand Traverse
Iosco
Kalkaska
Leelanau
Manistee
Missaukee
Montmorency
Ogemaw
Oscoda
Otsego
Presque Isle
Roscommon
Wexford

Region 3
Allegan
Barry
Ionia
Kent
Lake
Mason
Mecosta
Montcalm
Muskegon
Newaygo
Oceana
Osceola
Ottawa

Region 4
Arenac
Bay
Clare
Gladwin
Gratiot
Isabella
Midland
Saginaw

Region 5
Huron
Genesee
Lapeer
St. Clair
Sanilac
Tuscola

Region 6
Clinton
Eaton
Ingham
Livingston
Shiawassee

Region 7
Berrien
Branch
Calhoun
Cass
Kalamazoo
St. Joseph
Van Buren

Region 8
Hillsdale
Jackson
Lenawee
Monroe
Washtenaw

Region 9
Macomb
Oakland
Wayne (except for Detroit)

Region 10
City of Detroit