Mackinac County, Michigan

Founding: 1849 (declared in 1818)
Parent counties: Unorganized territory

Namesake: The Straits of Mackinac
Seat: Mackinac Island (1849–1882); St. Ignace (1882–)

Land area: 1,022 square miles

Population (2020): 10,834

Population (historic): 877 (1830); 1,938 (1860); 2,902 (1880); 7,703 (1900); 8,783 (1930)

Periods of population growth: pre-1830–1850; 1870–1890; 1900s; 1920–1940; 1950s; 1970–2000

Subdivisions: Two cities; 11 townships

National Register listings: 27

Pre-1940 residences (estimated): 1,832 (16.4%)
Pre-1940 housing survival rate: 48.2%
Pre-1860 housing survival rate (1940): 6.4%

Farm housing in disrepair (1950): 16.6%

Nonfarm housing in disrepair (1950): 14.1%
Average farmhouse value (1930): $879
Average outbuilding value (1930): $865

Average farmhouse size (1940): 5.1 rooms
Number of farms (1920): 479
Average farm size (1920): 45 acres
Sources of settlement: Michigan and Canada

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St. Ignace

Namesake: Ignatius of Loyola, founder of the Jesuit order

Founding: 1671 (founding of St. Ignace Mission); 1874 (post office); 1882 (incorporation)

Population (2020): 2,306

Population (historic): 934 (1880); 2,271 (1900); 2,109 (1930)

Periods of population growth: pre-1880–1890; 1920–1960; 1990s
Pre-1940 residences (estimated): 361 (25.6%)

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