Mackinac County (/ˈmækənɔː/ MAK-ə-naw, locally /ˈmækənə/ MAK-ə-nə) is a county in the Upper Peninsula of the U.S. state of Michigan. As of the 2020 census, the population was 10,834. The county seat is St. Ignace. Formerly known as Michilimackinac County, in 1818 it was one of the first counties of the Michigan Territory, as it had long been a center of French and British colonial fur trading, a Catholic church and Protestant mission, and associated settlement.

The county's name is shortened from "Michilimackinac", which referred to the Straits of Mackinac area as well as the French settlement at the tip of the lower peninsula. Mackinac County is one of two U.S. counties to feature shorelines on two Great Lakes, being Lake Huron and Lake Michigan (the other county being neighboring Chippewa County).

Michilimackinac County was created on October 26, 1818, by proclamation of territorial governor Lewis Cass. The county originally encompassed the Lower Peninsula of Michigan north of Macomb County and almost the entire present Upper Peninsula. As later counties were settled and organized, they were divided from this territory.

On April 1, 1840, areas in the Lower Peninsula were laid off to create 30 new counites. By 1841, the County of Michilimackinac was confined to the Upper Peninsula and its nearby islands, bordering Chippewa and Menominee counties.

On March 9, 1843, Michigan further divided the Upper Peninsula into six counties. At this time, the County of Michilimackinac more closely resembled its modern configuration, including only a portion of the Upper Peninsula closest to the Straits of Mackinac, plus several islands.

At the time of founding, the county seat was the community of Michilimackinac Island on Michilimackinac Island, later known as Mackinac Island, Michigan. This has been an important center for fur trading before the 1830s, when European demand declined. The county was organized in 1849 as Mackinac County. In 1882 the county seat was moved from Mackinac Island to St. Ignace, Michigan, which had been founded as a French Jesuit mission village during the colonial years.

Mackinac County is home to the Mackinac Bands of Chippewa and Ottawa Indians, a Native American state recognized tribe located in St. Ignace.

According to the U.S. Census Bureau, the county has a total area of 2,101 square miles (5,440 km), of which 1,022 square miles (2,650 km) is land and 1,079 square miles (2,790 km) (51%) is water. Mackinac County lies at the boundary of Lake Huron and Lake Michigan.

St. Ignace is the northern terminus of the Mackinac Bridge. Mackinac Island is within the county.

Due to its sparse population, the county has no weather stations.

By land

• Chippewa County (northeast)
• Luce County (northwest)
• Schoolcraft County (west)

By water

• Presque Isle County (southeast)
• Cheboygan County (south)
• Emmet County (south)
• Charlevoix County (southwest)

• Hiawatha National Forest (part)

• Mackinac Island
• St. Ignace (county seat)

• Naubinway

• Mackinac Bands of Chippewa and Ottawa Indians
• The Sault Tribe of Chippewa Indians, which is headquartered in Sault Ste. Marie in Chippewa County to the north, occupies two small territories within Mackinac County. One is located in St. Ignace Township about 3 miles (4.8 km) north of the city of St. Ignace on the shores of Lake Huron. The other portion is located in rural northwest Clark Township.

Historical population

Census	Pop.	Note	%±
1830	877		—
1840	923		5.2%
1850	3,598		289.8%
1860	1,938		−46.1%
1870	1,716		−11.5%
1880	2,902		69.1%
1890	7,830		169.8%
1900	7,703		−1.6%
1910	9,249		20.1%
1920	8,026		−13.2%
1930	8,783		9.4%
1940	9,438		7.5%
1950	9,287		−1.6%
1960	10,853		16.9%
1970	9,660		−11.0%
1980	10,178		5.4%
1990	10,674		4.9%
2000	11,943		11.9%
2010	11,113		−6.9%
2020	10,834		−2.5%
2023 (est.)	10,851		0.2%
U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010–2018

The 2010 United States census reported that Mackinac County had a population of 11,113, a decrease of 830 (-6.9%) from the 2000 census. In 2010 there were 5,024 households and 3,219 families in the county. The population density was 11 per square mile (4.2/km). There were 11,010 housing units at an average density of 11 per square mile (4.2/km)>). Racially, 76.5% of the population were White, 17.3% Native American, 0.5% Black or African American, 0.2% Asian, 0.2% of some other race and 5.3% of two or more races; 1.1% were Hispanic or Latino (of any race). Culturally, 18.5% were of German, 8.8% English, 8.0% French, French Canadian or Cajun, 7.6% Irish and 5.1% Polish ancestry. By the 2020 census, its population was 10,834.

In 2010, there were 5,024 households, of which 20.9% had children under the age of 18 living with them, 51.3% were married couples living together, 8.1% had a female householder with no husband present, and 35.9% were non-families. 31.0% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older. The average household size was 2.19 and the average family size was 2.7. Among them, 18.7% of the population were under the age of 18, 5.5% from 18 to 24, 19.3% from 25 to 44, 34.0% from 45 to 64, and 22.3% who were 65 years of age or older. The median age was 49 years. The population was 50.5% male and 49.5% female.

The median household income was $39,055 and the median family income was $50,984. The per capita income was $22,195. About 10.5% of families and 14.1% of the population were below the poverty line, including 19.3% of those under age 18 and 6.2% of those age 65 or over.

Religiously, Christianity is the predominant religion for the county and region of the Upper Peninsula. Mackinac County is part of the Roman Catholic Diocese of Marquette.

School districts include:

K-12:

• Engadine Consolidated Schools
• Les Cheneaux Community Schools
• Mackinac Island Public Schools
• Pickford Public Schools
• Rudyard Area Schools
• St. Ignace Area Schools
• Tahquamenon Area Schools

Elementary:

• Bois Blanc Pines School District
• Moran Township School District

• The Mackinac Island Town Crier is the weekly seasonal newspaper of Mackinac Island.
• The St. Ignace News is the weekly newspaper for the Upper Peninsula area of the Mackinac Straits.

The following television stations can be received in St. Ignace:

• Channel 4:WTOM-TV "TV 7&4" (NBC) (Cheboygan) (simulcasted in Channel 7, Harrietta)
• Channel 8:WGTQ "ABC 29&8" (ABC) (Goetzville) (simulcasted in Channel 29, Kalkaska)
• Channel 10:WWUP-TV "9&10 News" (CBS) (Goetzville) (simulcasted in Channel 9, Tustin)

The following stations can be heard in St. Ignace:

Call sign	Frequency	City broadcast from
WIAB	88.5	Mackinaw City
WSBX	94.5	Mackinaw City
WLXT	96.3	Petoskey
WWMK	106.3	Cheboygan
WAWM	98.9	Petoskey
WCBY - W264CF	100.7	St.Ignace, Michigan
WMKC	102.9	Indian River
WCMW	103.9	Harbor Springs
WKHQ	105.9	Petoskey

Call sign	Frequency	City broadcast from
WTCM	580	Traverse City
WOUF	750	Petoskey
WIDG	940	St. Ignace
WJML	1100	Petoskey
WCBY	1240	Cheboygan

Mackinac County is reliably Republican. Since the 1964 landslide of Lyndon B. Johnson, it has only supported a Democrat twice. Bill Clinton won the county in his 1992 and 1996 victories; the latter remains the last time a Democratic presidential candidate has won the county.

United States presidential election results for Mackinac County, Michigan

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2020	4,304	61.27%	2,632	37.47%	89	1.27%
2016	3,744	60.94%	2,085	33.94%	315	5.13%
2012	3,397	55.53%	2,652	43.35%	68	1.11%
2008	3,268	50.99%	3,027	47.23%	114	1.78%
2004	3,706	56.16%	2,819	42.72%	74	1.12%
2000	3,272	54.81%	2,533	42.43%	165	2.76%
1996	2,281	39.59%	2,700	46.86%	781	13.55%
1992	2,278	38.11%	2,293	38.36%	1,406	23.52%
1988	3,127	59.65%	2,093	39.93%	22	0.42%
1984	3,627	64.85%	1,949	34.85%	17	0.30%
1980	3,021	52.23%	2,262	39.11%	501	8.66%
1976	3,107	55.22%	2,452	43.58%	68	1.21%
1972	3,096	60.66%	1,937	37.95%	71	1.39%
1968	2,507	54.77%	1,751	38.26%	319	6.97%
1964	1,967	41.70%	2,748	58.26%	2	0.04%
1960	3,064	59.88%	2,042	39.91%	11	0.21%
1956	3,279	67.99%	1,540	31.93%	4	0.08%
1952	3,058	70.23%	1,285	29.51%	11	0.25%
1948	2,182	64.90%	1,138	33.85%	42	1.25%
1944	2,268	60.06%	1,488	39.41%	20	0.53%
1940	2,591	55.38%	2,075	44.35%	13	0.28%
1936	1,984	45.65%	2,286	52.60%	76	1.75%
1932	1,504	36.60%	2,578	62.74%	27	0.66%
1928	1,879	57.94%	1,355	41.78%	9	0.28%
1924	1,606	51.62%	998	32.08%	507	16.30%
1920	1,685	62.87%	932	34.78%	63	2.35%
1916	1,082	53.38%	908	44.80%	37	1.83%
1912	612	34.63%	730	41.31%	425	24.05%
1908	1,156	58.89%	769	39.17%	38	1.94%
1904	1,191	69.16%	503	29.21%	28	1.63%
1900	1,059	61.71%	632	36.83%	25	1.46%
1896	806	48.73%	804	48.61%	44	2.66%
1892	478	35.41%	855	63.33%	17	1.26%
1888	625	40.24%	913	58.79%	15	0.97%
1884	479	46.06%	558	53.65%	3	0.29%
1880	145	32.88%	296	67.12%	0	0.00%
1876	74	26.62%	204	73.38%	0	0.00%

The county government operates the jail, maintains rural roads, operates the major local courts, keeps files of deeds and mortgages, maintains vital records, administers public health regulations, and participates with the state in the provision of welfare and other social services. The county board of commissioners controls the budget but has only limited authority to make laws or ordinances. In Michigan, most local government functions — police and fire, building and zoning, tax assessment, street maintenance, etc. — are the responsibility of individual cities and townships.

• Prosecuting Attorney: J. Stuart Spencer
• Sheriff: Edward Wilk
• County Clerk: Hillary Vowell
• County Treasurer: Jennifer Goudreau
• Register of Deeds: Mary Jo Savard
• County Surveyor: Jeffrey M. Davis

(information as of April 2015)

There are 34 official state historical markers in the county:

• Across the Peninsula
• American Fur Company Store
• Battlefield of 1814
• Biddle House
• Bois Blanc Island
• British Cannon
• British Landing
• Early Missionary Bark Chapel
• Epoufette
• Fort de Buade
• Fort Holmes
• Grand Hotel
• Gros Cap Island & St. Helena Island
• Historic Fort Mackinac
• Indian Dormitory
• Island House (Mackinac Island)
• Lake Michigan
• Lake View Hotel
• Little Stone Church
• Mackinac Conference
• Mackinac Island
• Mackinac Straits
• Market Street
• Mission Church
• Mission House
• Northernmost Point of Lake Michigan
• Old Agency House
• Round Island Lighthouse
• Sainte Anne Church
• St. Ignace
• St. Ignace Mission
• Skull Cave
• Trinity Church (Mackinac Island)
• Wawashkamo Golf Club

The Mackinac County Airport (83D) in St. Ignace and Mackinac Island Airport (MCD) on Mackinac Island are located within Mackinac County. The nearest airports with scheduled commercial passenger service are Chippewa County International Airport (CIU) in Sault Ste. Marie and Pellston Regional Airport (PLN).

M-185 does not allow motor vehicles with the exception of emergency vehicles and service vehicles.

Numerous companies operate ferries to Bois Blanc Island and Mackinac Island. Ferries to and from Mackinac Island sail from St. Ignace and Mackinaw City, while the Bois Blanc Island ferry sails from Cheboygan.

• Canadian National Railway

• British Landing
• Fort Mackinac
• Garlyn Zoo
• Straits State Park
• Deer Ranch
• Castle Rock (Michigan)

• List of Michigan State Historic Sites in Mackinac County, Michigan
• National Register of Historic Places listings in Mackinac County, Michigan

• "Bibliography on Mackinac County". Clarke Historical Library, Central Michigan University. Retrieved July 20, 2013.
• Wood, Edwin Orin (1918). Historic Mackinac : the historical, picturesque and legendary features of the Mackinac country : illustrated from sketches, drawings, maps and photographs, with an original map of Mackinac Island, made especially for this work: in two volumes. Vol. 1. New York: Macmillan. Retrieved April 20, 2014.
• Wood, Edwin Orin (1918). Historic Mackinac : the historical, picturesque and legendary features of the Mackinac country : illustrated from sketches, drawings, maps and photographs, with an original map of Mackinac Island, made especially for this work: in two volumes. Vol. 2. New York: Macmillan. Retrieved April 20, 2014.

• Mackinac County government
• Mackinac County Profile, Sam M Cohodas Regional Economist, Tawni Hunt Ferrarini, Ph.D.
• A History of the Upper Peninsula of Michigan, Fuller, George N.
• St. Ignace visitor's bureau

46°01′N 85°01′W / 46.01°N 85.01°W / 46.01; -85.01