Iosco County, Michigan

Founding: 1857 (declared in 1840)
Parent county: Unorganized territory

Namesake: Uncertain—perhaps a Native American word or a Henry Schoolcraft neologism
Seat: Tawas City (1857–)

Land area: 549 square miles

Population (2020): 25,237

Population (historic): 3,163 (1870); 15,224 (1890); 9,753 (1910); 7,517 (1930)

Periods of population growth: 1860–1890; 1930–1990

Subdivisions: Three cities; three CDPs; 11 townships

National Register listings: Four

Pre-1940 residences (estimated): 1,732 (8.4%)
Pre-1940 housing survival rate: 51.8%

Farm housing in disrepair (1950): 14.8%

Nonfarm housing in disrepair (1950): 2.8%
Average farmhouse value (1930): $883
Average outbuilding value (1930): $985
Number of farms (1920): 929
Average farm size (1920): 53.5 acres
Sources of settlement: Michigan, Canada, New York, Germany, France, Sweden, and Finland
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Tawas City

Namesake: Uncertain—perhaps a derivation of Ottawa

Founding: 1854 (platting); 1856 (post office); 1885 (incorporation)

Population (2020): 1,834

Population (historic): 712 (1880); 1,228 (1900); 1,034 (1930)

Periods of population growth: pre-1880–1890; 1920–1960; 1970–1990
Pre-1940 residences (estimated): 116 (12.2%)
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