| Defunct Name | Present Name & Link | History |
| Aischum | Lake Co., Michigan | Created April 1, 1840, changed to Lake County on March 8, 1843. |
| Anamickee | Alpena Co., Michigan | Created April 1, 1840, changed to Alpena County on March 8, 1843. |
| Bleeker | Menominee Co., Michigan | Set off in 1861. Changed to Menominee County in 1863. |
| Brown | Brown Co., Wisconsin | Formed in 1818 from unorganized territory when Michigan Territory was expanded to include area west of Lake Michigan upon formation of the state of Illinois. Transferred to Wisconsin Territory in 1836 and continues as Brown County, Wisconsin. |
| Cheonoquet | Montmorency Co., Michigan | Created April 1, 1840, changed to Montmorency COunty on March 8, 1843. |
| Crawford | Crawford Co., Wisconsin | Formed in 1818 from unorganized territory when Michigan Territory was expanded to include area west of Lake Michigan upon formation of the state of Illinois. ransferred to Wisconsin Territory in 1836 and continues as Crawford County, Wisconsin. ( This is also a different Crawford County, Michigan.) |
| DesMoines | DesMoines Co., Iowa | Formed in 1834 from unorganized territory. Transferred to Wisconsin Territory in 1836 and continues as DesMoines County, Iowa. |
| Dubuque | Dubuque Co., Iowa | Formed in 1834 from unorganized territory. Transferred to Wisconsin Territory in 1836 and continues as Dubuque County, Iowa. |
| Iowa | Iowa Co., Wisconsin | Formed in 1830 from part of Crawford County. Transferred to Wisconsin Territory in 1836 and continues as Iowa County, Wisconsin. |
| Isle Royale | Keweenaw Co., Michigan | Isle Royale County was formed in 1875 from part of Keweenaw County. Returned to Keweenaw County in 1897. |
| Kanotin | Iosco Co., Michigan | Created April 1, 1840. Changed to Iosco County on March 8, 1843. |
| Kautawaubet | Wexford Co., Michigan | Created April 1, 1840. Changed to Wexford County on March 8, 1843. |
| Kayakee | Clare Co., Michigan | Created April 1, 1840. Changed to Clare County on March 8, 1843. |
| Keskkauko |
Charlevoix Co., Michigan & Emmet Co., Michigan |
Formed in 1840 from part of Mackinac County. Renamed Charlevoix County in 1843. Annexed to Emmet County in 1853. Reformed as Charlevoix County from Emmet County in 1869. |
| Manitou |
Charlevoix Co. Michigan & Leelanau Co., Michigan |
Formed in 1855 from parts of Emmet County and Leelanau COunty. County government was disbanded in 1861 and attached for administrative purposes to Mackinac County. In 1865, it was attached to Leelanau and reattached to Mackinac in 1869. The county was abolished in 1895 and absorbed by Charlevoix County and Leelanau County. |
| Meegisee | Antrim Co., Michigan | Set off in 1840 and changed to Antrim County in 1843. |
| Michilimackinac | Mackinac Co., Michigan | County laid out in 1818 and organized in 1840 as Mackinac County. |
| Mikenauk | Roscommon Co., Michigan | Formed in 1840 and changed to Roscommon County in 1843. |
| Milwaukee | Milwaukee Co., Wisconsin | Formed in 1834 from part of Brown County. Transferred to Wisconsin Territory in 1836 and continues as Milwaukee County, Wisconsin. |
| Negwegon | Alcona Co., Michigan | Formed in 1840 and changed to Alcona County in 1843. |
| Notipekago | Mason Co., Michigan | Formed in 1840 and changed to Mason County in 1843. |
| Okkuddo | Otsego Co., Michigan | Formed in 1840 and changed to Otsego County in 1843. |
| Omeena | Grand Traverse Co., Michigan | Formed in 1840 from part of Mackinac County. Annexed to Grand Traverse County in 1853. |
| Reshkauko | Emmet Co., Michigan | Formed in 1840 and changed to Emmet County in 1843. |
|
Shawono Shawano Shawona |
Crawford Co., Michigan | Formed in 1840 and changed to Crawford County in 1843. |
| Tonedagana | Emmet Co., Michigan | Formed in 840 and became part of Emmet County in 1843. |
| Unwattin | Osceola Co., Michigan | formed in 1840 and changed to Osacola County in 1843. |
| Wabassee | Kalkaska Co., Michigan | Formed in 1840 and changed to Kalkaska County in 1843. |
| Washington | Marquette Co., Michigan | Changed to Marquette County - dates unknown. |
| Washington | Wayne Co., Michigan | Wayne County was formed from this county in 1809. |
| Wyandot | Cheboygan Co., Michigan | Formed in 1840 from part of Mackinac County. Annexed to Cheboygan County in 1853. |
State Coordinator:
Colleen Pustola
Archives/Assistant State Coordinator:
Wayne Summers