Michigan's 13th Senate district


Michigan's 13th Senate district is one of 38 districts in the Michigan Senate. The 13th district was created by the 1850 Michigan Constitution, as the 1835 constitution only permitted a maximum of eight senate districts. It has been represented by Democrat Rosemary Bayer since 2023, following her victory over Republican Jason Rhines.

Geography

District 13 encompasses parts of Oakland and Wayne counties.

2011 Apportionment Plan

District 13, as dictated by the 2011 Apportionment Plan, covered eastern Oakland County in the northern suburbs of Detroit, including Troy, Rochester Hills, Royal Oak, Berkley, Clawson, Birmingham, Bloomfield Hills, and Rochester.
The district was split among Michigan's 8th, 9th, and 11th congressional districts, and overlapped with the 26th, 27th, 40th, 41st, and 45th districts of the Michigan House of Representatives.

Historical district boundaries

MapDescriptionApportionment PlanNotes

1964 Apportionment Plan
  • Washtenaw County
  • *Ypsilanti Township
  • Wayne County
  • *Belleville
  • *Canton Township
  • *Garden City
  • *Romulus Township
  • *Sumpter Township
  • *Taylor
  • *Van Buren Township
  • *Wayne
  • *Westland
    		• 1972 Apportionment Plan
  • Barry County
  • Ionia County
  • Kalamazoo County
  • *Cooper Township
  • *Kalamazoo
  • *Kalamazoo Township
  • *Richland Township
  • Montcalm County
    		• 1982 Apportionment Plan
  • Oakland County
  • *Birmingham
  • *Bloomfield Hills
  • *Clawson
  • *Ferndale
  • *Hazel Park
  • *Huntington Woods
  • *Madison Heights
  • *Pleasant Ridge
  • *Royal Oak
  • *Troy
    		• 1992 Apportionment Plan
  • Oakland County
  • *Berkley
  • *Birmingham
  • *Bloomfield Hills
  • *Bloomfield Township
  • *Clawson
  • *Madison Heights
  • *Royal Oak
  • *Troy
    		• 2001 Apportionment Plan
  • Oakland County
  • *Berkley
  • *Birmingham
  • *Bloomfield Hills
  • *Clawson
  • *Rochester
  • *Rochester Hills
  • *Royal Oak
  • *Troy
    		• 2011 Apportionment Plan