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County |
Year Formed |
County Seat |
Contact |
| Alcona | 1840 | Harrisville | Available |
| Alger | 1885 | Munising | Available |
| Allegan | 1831 | Allegan | Susan Dorris |
| Alpena | 1831 | Alpena | Available |
| Antrim | 1840 | Bellaire | Available |
| Arenac | 1831 | Standish | Available |
| Baraga | 1875 | L'Anse | Available |
| Barry | 1829 | Hastings | Available |
| Bay | 1857 | Bay City | Available |
| Benzie | 1863 | Beulah | Available |
| Berrien | 1829 | St. Joseph | Brenda Sears |
| Branch | 1829 | Coldwater | Available |
| Calhoun | 1833 | Marshall | Available |
| Cass | 1829 | Cassopolis | Available |
| Charlevoix | 1840 | Charlevoix | Available |
| Cheboygan | 1840 | Cheboygan | Available |
| Chippewa | 1826 | Sault Ste. Marie | Available |
| Clare | 1826 | Harrison | Available |
| Clinton | 1831 | St. Johns | Available |
| Crawford | 1868 | Grayling | Available |
| Delta | 1843 | Escanaba | Available |
| Dickinson | 1891 | Iron Mountain | Available |
| Eaton | 1829 | Charlotte | Susan Dorris |
| Emmet | 1840 | Petoskey | Available |
| Genesse | 1835 | Flint | Available |
| Gladwin | 1831 | Gladwin | Available |
| Gogebic | 1887 | Bessemer | Available |
| Grand Traverse | 1840 | Traverse City | Available |
| Gratiot | 1831 | Ithaca | Available |
| Hillsdale | 1829 | Hillsdale | Available |
| Houghton | 1845 | Houghton | Available |
| Huron | 1849 | Bad Axe | Available |
| Ingham | 1829 | Mason | Available |
| Ionia | 1831 | Ionia | Susan Dorris |
| Iosco | 1840 | Tawas City | Available |
| Iron | 1885 | Crystal Falls | Available |
| Isabella | 1831 | Mt. Pleasant | Susan Dorris |
| Jackson | 1829 | Jackson | Available |
| Kalamazoo | 1829 | Jackson | Available |
| Kalkaska | 1840 | Kalkaska | Available |
| Kent | 1836 | Grand Rapids | Available |
| Keeweenaw | 1861 | Eagle River | Available |
| Lake | 1840 | Baldwin | Available |
| Lapeer | 1822 | Lapeer | Clayton Betzing |
| Leelanau | 1840 | Leland | Available |
| Lenawee | 1840 | Adrian | Available |
| Luce | 1887 | Newberry | Available |
| Mackinac | 1818 | St. Ignace | Available |
| Macomb | 1818 | Mt. Clemens | Available |
| Manistee | 1855 | Manistee | Available |
| Marquette | 1843 | Marquette | Available |
| Mason | Ludington | Available | |
| Mecosta | 1840 | Big Rapids | Available |
| Menominee | 1861 | Menominee | Available |
| Midland | 1831 | Midland | Available |
| Missaukee | 1840 | Lake City | Available |
| Monroe | 1817 | Monroe | Available |
| Montcalm | 1831 | Stanton | Available |
| Montmorency | 1881 | Atlanta | Available |
| Muskegon | 1859 | Muskegon | Available |
| Newago | 1840 | White Cloud | Available |
| Oakland | 1819 | Pontiac | Pam & Deb |
| Ogemaw | 1840 | West Branch | Available |
| Ontonagon | 1843 | Ontonagon | Available |
| Osceola | 1840 | Reed City | Available |
| Oscoda | 1840 | Mio | Available |
| Otsego | 1840 | Gaylord | Available |
| Ottawa | 1831 | Grand Haven | Available |
| Presque Isle | 1840 | Rogers City | Available |
| Roscommon | 1840 | Roscommon | Available |
| Saginaw | 1822 | Saginaw | Cheryl Siedelmann |
| St. Clair | 1820 | Port Huron | Available |
| St. Joseph | 1829 | Centreville | Available |
| Sanilac | 1848 | Sandusky | Available |
| Schoolcraft | 1843 | Manistique | Available |
| Shiawassee | 1822 | Corunna | Available |
| Tuscola | 1840 | Caro | Clayton Betzing |
| Van Buren | 1829 | Paw Paw | Available |
| Washtenaw | 1822 | Ann Arbor | Paulette |
| Wayne | 1815 | Detroit | Available |
| Wexford | 1840 | Cadillac | Susan Dorris |

| Discontinued | Counties | ||
| Aishcum | Anamickee | Bleeker | Chenoquet |
| Des Moines | Isle Royal | Kanotin | Kautawaubet |
| Kaykakee | Manitou | Meegisee | Michillamackinac |
| Mikenauk | Neewago | Notipekago | Ukkuddo |
| Reshkauko | Shawano | Tonedagana | Unwattin |
| Wabassee |

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