Sanilac County, Michigan

Founding: 1849 (declared in 1822)
Parent counties: Unorganized territory

Namesake: Sanilac, Wyandot chief
Seat: Lexington (1849–1879); Sandusky (1879–)

Land area: 963 square miles

Population (2020): 40,611

Population (historic): 2,112 (1850); 14,562 (1870); 32,589 (1890); 33,930 (1910); 27,751 (1930)

Periods of population growth: pre-1850–1900; 1930–1980; 1990s

Subdivisions: Four cities; nine villages; one CDP; 26 townships

National Register listings: 12

Pre-1940 residences (estimated): 4,790 (20.8%)
Pre-1940 housing survival rate: 57.5%
Pre-1860 housing survival rate (1940): 8.2%

Farm housing in disrepair (1950): 12%

Nonfarm housing in disrepair (1950): 8.1%
Average farmhouse value (1930): $1,161
Average outbuilding value (1930): $1,386

Average farmhouse size (1940): 6.9 rooms
Number of farms (1920): 5,112
Average farm size (1920): 88.9 acres
Sources of settlement: Canada, Germany, New York, Ireland, and England

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Sandusky

Namesake: Sandusky, Ohio

Founding: 1879 (platting as Sanilac Center); 1879 (post office); 1885 (incorporation)

Population (2020): 2,709

Population (historic): 403 (1890); 993 (1910); 1,305 (1930)

Periods of population growth: pre-1890–2000; 2010s
Pre-1940 residences (estimated): 176 (15.7%)

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Outstanding Buildings

1. Joseph Mahon House (c. 1875). 3804 Bay City–Forestville Road. Delaware.
2. William Arnett House (c. 1880). 5980 Applegate Road. Sanilac.
3. *Joseph Loop Farm (1872). 228 South Ridge Street. Sanilac. Second Empire.