District 4

Counties:

• Livingston
• Oakland

*excluding the area east of highways I-75 and M-24 (NOTE: this puts Hazel park, Madison Heights, Troy, Lake Orion, Avondale, Rochester, and Oxford in District 16)

District 5

Counties:

• Isabella
• Midland
• Gratiot
• Clinton
• Shiawassee
• Saginaw

*the portion of Bay south of a line extending to the southern boundary of Gladwin*

District 6

Counties:

• VanBuren
• Berrien
• Cass

District 7

Counties:

• Muskegon
• Montcalm
• The southern one-third of Newaygo
• The portions of Ottawa, Kent, and Ionia north of the 43rd parallel

*Excluding the corporate limits of Grand Rapids*

District 8

Counties:

• Eaton
• Ingham
• Jackson
• Hillsdale
• Lenawee

District 9

Counties:

• Montmorency
• Alpena
• Oscoda
• Alcona
• Roscommon
• Ogemaw
• Iosco
• Clare
• Gladwin
• Arenac
• The portion of Bay north of a line extending the southern boundary of Gladwin

District 10

Counties:

• Allegan
• Barry
• The portions of Ottawa, Kent, and Ionia south of the 43rd parallel

*Including the corporate limits of Grand Rapids*

District 11

Counties:

• Kalamazoo
• Calhoun
• St. Joseph
• Branch

District 12

Counties:

• Washtenaw
• Monroe
• The portion of Wayne west and south of the corporate limits of Detroit

District 13/14

Counties:

• Chippewa
• Mackinac, Luce
• Schoolcraft
• Delta, Alger
• Keweenaw
• Houghton
• Ontonagon
• Gogebic
• Baraga
• Iron
• Dickinson
• Marquette
• Menominee

District 15

The area within the corporate limits of Detroit

District 16

Counties:

• Macomb
• St. Clair
• The portion of Oakland east of highways I-75, M-24, and the Grosse Pointe and Harper Woods areas