Alcona Formed: 1869	Alger Formed: 1885	Allegan Formed: 1835	Alpena Formed: 1857	Antrim Formed: 1863	Arenac Formed: 1883	Baraga Formed: 1875
Barry Formed: 1839	Bay Formed: 1858	Benzie Formed: 1869	Berrien Formed: 1831	Branch Formed: 1833	Calhoun Formed: 1833	Cass Formed: 1829
Charlevoix Formed: 1869	Cheboygan Formed: 1853	Chippewa Formed: 1827	Clare Formed: 1871	Clinton Formed: 1839	Crawford Formed: 1879	Delta Formed: 1861
Dickinson Formed: 1891	Eaton Formed: 1837	Emmet Formed: 1853	Genesee Formed: 1836	Gladwin Formed: 1875	Gogebic Formed: 1887	Grand Traverse Formed: 1851
Gratiot Formed: 1855	Hillsdale Formed: 1835	Houghton Formed: 1846 - Reorganized 1848	Huron Formed: 1859	Ingham Formed: 1838	Ionia Formed: 1837	Iosco Formed: 1857
Iron Formed: 1885	Isabella Formed: 1859	Jackson Formed: 1832	Kalamazoo Formed: 1830	Kalkaska Formed: 1871	Kent Formed: 1836	Keweenaw Formed: 1861
Lake Formed: 1871	Lapeer Formed: 1833	Leelanau Formed: 1863	Lenawee Formed: 1826	Livingston Formed: 1836	Luce Formed: 1887	Mackinac Formed: 1849
Macomb Formed: 1818	Manistee Formed: 1855	Marquette Formed: 1848 Reorganized 1851	Mason Formed: 1855	Mecosta Formed: 1859	Menominee Formed: as Bleeker, 1861 Reorganized 1863	Midland Formed: 1850 (no elections held until 1855)
Missaukee Formed: 1871	Monroe Formed: 1817	Montcalm Formed: 1850	Montmorency Formed: 1881	Muskegon Formed: 1859	Newaygo Formed: 1851	Oakland Formed: 1821
Oceana Formed: 1851 Reorganized 1855	Ogemaw Formed: 1875	Ontonagon Formed: 1848	Osceola Formed: 1869	Oscoda Formed: 1881	Otsego Formed: 1875	Ottawa Formed: 1837
Presque Isle Formed: 1871 Reorganized 1875	RoscommonFormed: 1875	Saginaw Formed: 1835	St. Clair Formed: 1821	St. Joseph Formed: 1829	Sanilac Formed: 1848	Schoolcraft Formed: 1871
Shiawassee Formed: 1837	Tuscola Formed: 1850	Van Buren Formed: 1837	Washtenaw Formed: 1826	Wayne Formed: 1815	Wexford Formed: 1869