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County · code 26097

Mackinac CountyMichigan

Mackinac County is located in Michigan and has its county seat in St. Ignace. The county was created on December 3, 1818, from Wayne County and former Illinois territory.

  • Founded1818
  • County seatSt. Ignace
  • Named forStraits of Mackinac, Michigan
  • Land area1,022 sq mi + 1,079 sq mi water
  • Population10,834 2020 Census
  • Parcels mapped22,416 checked 16 October 2026
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Updated

EmmetChippewaCharlevoixCheboyganLuceSchoolcraftPresque Isle St. Ignace Census outline · seat marked

Where it is

Mackinac on the map of Michigan

Michigan has 83 counties and county equivalents, each with its own records office. Shapes with a page are links.

Alcona CountyAlger CountyAllegan CountyAlpena CountyAntrim CountyArenac CountyBaraga CountyBarry CountyBay CountyBenzie CountyBerrien CountyBranch CountyCalhoun CountyCass CountyCharlevoix CountyCheboygan CountyChippewa CountyClare CountyClinton CountyCrawford CountyDelta CountyDickinson CountyEaton CountyEmmet CountyGenesee CountyGladwin CountyGogebic CountyGrand Traverse CountyGratiot CountyHillsdale CountyHoughton CountyHuron CountyIngham CountyIonia CountyIosco CountyIron CountyIsabella CountyJackson CountyKalamazoo CountyKalkaska CountyKent CountyKeweenaw CountyLake CountyLapeer CountyLeelanau CountyLenawee CountyLivingston CountyLuce CountyMacomb CountyManistee CountyMarquette CountyMason CountyMecosta CountyMenominee CountyMidland CountyMissaukee CountyMonroe CountyMontcalm CountyMontmorency CountyMuskegon CountyNewaygo CountyOakland CountyOceana CountyOgemaw CountyOntonagon CountyOsceola CountyOscoda CountyOtsego CountyOttawa CountyPresque Isle CountyRoscommon CountySaginaw CountySt. Clair CountySt. Joseph CountySanilac CountySchoolcraft CountyShiawassee CountyTuscola CountyVan Buren CountyWashtenaw CountyWayne CountyWexford CountyMackinac County Mackinac
Counties of Michigan · Mackinac highlighted

History

Formed in 1818 from Wayne County, Bond County, Crawford County and Madison County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Originally named Michilimackinac, the county was created by Michigan Territory from Wayne County and non-county areas, including former parts of Illinois Territory. The county was named after the Straits of Mackinac. Territory that is now part of Wisconsin and Minnesota was eliminated from Mackinac County in 1836 when Wisconsin Territory was created from Michigan Territory. The name was shortened to Mackinac around 1850, though the change was not officially adopted by the legislature and both names remained in use through the 1840s.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1818
    Mackinac County created Michilimackinac (now Mackinac) created by Michigan Territory from Wayne, Non-County Area 1, unorganized federal territory, and former parts of Bond (Illinois), Crawford (Illinois), and Madison (Illinois); included parts of present Michigan, Minnesota, and Wisconsin.
    from Waynefrom Bond (Ill.)from Crawford (Ill.)from Madison (Ill.)
    · Terr. Papers U.S., 10:802
  2. 1821
    Lost territory Michilimackinac (now Mackinac) lost to creation of Non-County Area 2, which was attached to Oakland for administrative and judicial purposes.
    to Oakland
    · Terr. Papers U.S., 11:132
  3. 1822
    Lost territory Michilimackinac (now Mackinac) lost territory acquired from the Indians by the 1821 Treaty at Chicago; this area became part of Non-County Area 1 and was attached to Monroe for administrative and judicial purposes.
    to Monroe
    · Terr. Papers U.S., 11:308-313
  4. 1827
    Lost territory Michilimackinac (now Mackinac) lost to creation of Chippewa.
    to Chippewa
    · Mich. Terr. Laws, 2:295-296
  5. 1850
    Renamed Circa 1850, Michilimackinac was renamed Mackinac; this change was never officially adopted by the legislature and both names were used interchangeably through the 1840s.
    formerly Circa 1850, Michilimackinac Was
    · Mich. Acts 1847, ann. sess., no. 56/pp. 68-69; Mich. Acts 1848, ann. sess., no. 108/pp. 119-124
Show all 18 changes (13 more)
  1. 1818
    Mackinac County created Michilimackinac (now Mackinac) created by Michigan Territory from Wayne, Non-County Area 1, unorganized federal territory, and former parts of Bond (Illinois), Crawford (Illinois), and Madison (Illinois); included parts of present Michigan, Minnesota, and Wisconsin.
    from Waynefrom Bond (Ill.)from Crawford (Ill.)from Madison (Ill.)
    · Terr. Papers U.S., 10:802
  2. 1821
    Lost territory Michilimackinac (now Mackinac) lost to creation of Non-County Area 2, which was attached to Oakland for administrative and judicial purposes.
    to Oakland
    · Terr. Papers U.S., 11:132
  3. 1822
    Lost territory Michilimackinac (now Mackinac) lost territory acquired from the Indians by the 1821 Treaty at Chicago; this area became part of Non-County Area 1 and was attached to Monroe for administrative and judicial purposes.
    to Monroe
    · Terr. Papers U.S., 11:308-313
  4. 1827
    Lost territory Michilimackinac (now Mackinac) lost to creation of Chippewa.
    to Chippewa
    · Mich. Terr. Laws, 2:295-296
  5. 1831
    Lost territory Michilimackinac (now Mackinac) lost to creation of Ionia, Isabella, Kent, Montcalm, Oceana, and Ottawa.
    to Ioniato Isabellato Kentto Montcalmto Oceanato Ottawa
    · Mich. Terr. Laws, 3:secs. 2, 3, 5, 7, 8, 13/pp. 871-873
  6. 1836
    Lost territory Michilimackinac (now Mackinac) lost to Wisconsin Territory when Wisconsin Territory was created from Michigan Territory; Michilimackinac eliminated from present Minnesota and Wisconsin. · U.S. Stat., vol. 5, ch. 54 [1836], sec. 1/p. 10; Terr. Papers U.S., 27:41-52
  7. 1840
    Lost territory Michilimackinac (now Mackinac) lost to Oceana and lost to creation of Aishcum (now Lake), Anamickee (now Alpena), Cheboygan, Cheonoquet (now Montmorency), Kautawaubet (now Wexford), Kaykakee (now Clare), Keskkauko (now Charlevoix), Leelanau, Manistee, Mecosta, Meegisee (now Antrim), Mikenauk (now Roscommon), Missaukee, Newaygo, Notipekago (now Mason), Okkuddo (now Otsego), Omeena (extinct), Oscoda, Presque Isle, Shawono (now Crawford), Tonedagana (now Emmet), Unwattin (now Osceola), Wabassee (now Kalkaska), and Wyandot (extinct). Anamickee, Cheboygan, Cheonoquet, Kanotin (now Iosco), Kautawaubet, Keskkauko, Leelanau, Manistee, Meegisee, Mikenauk, Missaukee, Negwegon (now Alcona), Ogemaw, Okkuddo, Omeena, Oscoda, Presque Isle, Shawono, Tonedagana, Wabassee, and Wyandot not fully organized, all attached to Michilimackinac "for judicial purposes."
    to Oceanato Aishcumto Laketo Anamickeeto Alpenato Cheboyganto Cheonoquetto Montmorencyto Kautawaubetto Wexfordto Kaykakeeto Clareto Keskkaukoto Charlevoixto Leelanauto Manisteeto Mecostato Meegiseeto Antrimto Mikenaukto Roscommonto Missaukeeto Newaygoto Notipekagoto Masonto Okkuddoto Otsegoto Omeenato Oscodato Presque Isleto Shawonoto Crawfordto Tonedaganato Emmetto Unwattinto Osceolato Wabasseeto Kalkaskato Wyandotto Kanotinto Ioscoto Negwegonto Alconato Ogemaw
    · Mich. Acts 1840, ann. sess., no. 119/pp. 196-200
  8. 1843
    Exchanged territory Michilimackinac (now Mackinac) exchanged with Chippewa, lost to creation of Delta, Marquette, Ontonagon, and Schoolcraft; Delta not fully organized, attached to Michilimackinac "for judicial purposes."
    with Chippewawith Deltawith Marquettewith Ontonagonwith Schoolcraft
    · Mich. Acts 1843, ann. sess., no. 89, secs. 1-7/pp. 201-203
  9. 1846
    Changed Manistee detached from Michilimackinac (now Mackinac), attached to Ottawa "for judicial purposes."
    ManisteeOttawa
    · Mich. Acts 1846, ann. sess., no. 33, secs. 21-22/p. 31
  10. 1850
    Renamed Circa 1850, Michilimackinac was renamed Mackinac; this change was never officially adopted by the legislature and both names were used interchangeably through the 1840s.
    formerly Circa 1850, Michilimackinac Was
    · Mich. Acts 1847, ann. sess., no. 56/pp. 68-69; Mich. Acts 1848, ann. sess., no. 108/pp. 119-124
  11. 1851
    Lost territory Mackinac lost part of Omeena (extinct) attachment to creation of Grand Traverse.
    to Omeenato Grand Traverse
    · Mich. Acts 1851, ann. sess., no. 141/p. 172
  12. 1853
    Lost territory Mackinac lost Beaver Island, the surrounding islands, and the Fox Islands to Emmet; Emmet fully organized, detached from Mackinac. Mackinac lost Charlevoix attachment to Emmet. Cheboygan fully organized, detached from Mackinac. Mackinac lost Wyandot (extinct) attachment to Cheboygan. Alcona, Alpena, Crawford, Iosco, Montmorency, Ogemaw, Oscoda, Otsego, Presque Isle, and Roscommon detached from Mackinac, all attached to Cheboygan "for judicial and municipal purposes."
    to Emmetto Charlevoixto Cheboyganto Wyandotto Alconato Alpenato Crawfordto Ioscoto Montmorencyto Ogemawto Oscodato Otsegoto Presque Isleto Roscommon
    · Mich. Acts 1853, reg. sess., no. 18, secs. 1, 4, 7-8/pp. 15-17 and reg. sess., no. 20/p. 19
  13. 1853
    Lost territory Mackinac lost Omeena attachment to Grand Traverse; Omeena eliminated. Antrim, Kalkaska, Leelanau, Missaukee, and Wexford all detached from Mackinac, attached to Grand Traverse "for judicial and municipal purposes."
    to Omeenato Grand Traverseto Antrimto Kalkaskato Leelanauto Missaukeeto Wexford
    · Mich. Acts 1853, reg. sess., no. 34/p. 43
  14. 1861
    Changed Delta fully organized, detached from Mackinac.
    Delta
    · Mich. Acts 1861, reg. sess., no. 129, secs. 1, 5/pp. 174-175; Mich. Acts 1863, reg. sess., no. 16/p. 14
  15. 1861
    Changed Manitou (extinct) attached to Mackinac for meetings of the district court only.
    Manitou
    · Mich. Acts 1861, reg. sess., no. 262/p. 556
  16. 1865
    Changed Manitou (extinct) detached from district court jurisdiction of Mackinac, attached to Leelanau for meetings of the circuit court only.
    ManitouLeelanau
    · Mich. Acts 1865, reg. sess., no. 138/p. 246
  17. 1875
    Boundary clarified Boundary between Mackinac and Chippewa was redefined (no change).
    with Chippewano change
    · Mich. Acts 1875, reg. sess., pub., no. 185/p. 213
  18. 1887
    Lost territory Mackinac lost to creation of Luce.
    to Luce
    · Mich. Acts 1887, reg. sess., loc., no. 363, secs. 1, 13/pp. 84, 86

Land and parcels

What the maps cover in Mackinac

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Mackinac by the Census

Population
10,834 2020 Census count
Housing units
10,519 2020 Census count
Land area
1,022 square miles
Water area
1,079 square miles · 51% of the county, including large bodies of water
People per sq mi
11 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Mackinac County's official site

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County government

See your own lot on these maps

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Questions

Common questions about Mackinac County

When was Mackinac County founded?
Mackinac County was founded in 1818, formed from Wayne County, Bond County, Crawford County and Madison County, and named after Straits of Mackinac, Michigan.
What is the county seat of Mackinac County?
The county seat of Mackinac County is St. Ignace.
Is there an online parcel map for Mackinac County?
Yes. Mackinac County publishes a parcel map of 22,416 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Mackinac County's boundary or name changed?
Mackinac County was created in 1818 from Wayne County, Bond County, Crawford County and Madison County. Since then the Atlas of Historical County Boundaries records 16 later changes, chiefly involving Leelanau County, Omeena County and Alcona County. It was formerly called Circa 1850, Michilimackinac Was.
Is my lot in a flood zone?
We do not have flood maps for Mackinac County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door