Roscommon County, Michigan

Founding: 1875 (declared in 1840)
Parent county: Unorganized territory

Namesake: County Roscommon, Ireland
Seat: Houghton Lake (1875–1879); Roscommon (1879–)

Land area: 520 square miles

Population (2020): 23,459

Population (historic): 1,459 (1880); 1,787 (1900); 2,055 (1930)

Periods of population growth: pre-1880–1890; 1900s; 1920–2000

Subdivisions: One village; three CDPs; 11 townships

National Register listings: One

Pre-1940 residences (estimated): 951 (3.9%)
Pre-1940 housing survival rate: 53.5%

Farm housing in disrepair (1950): 15.3%

Nonfarm housing in disrepair (1950): 2.7%
Average farmhouse value (1930): $831
Average outbuilding value (1930): $656
Number of farms (1920): 267
Average farm size (1920): 39 acres
Sources of settlement: Michigan, Canada, Ohio, and New York
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Roscommon

Namesake: Roscommon County

Founding: 1873 (platting); 1873 (post office); 1882 (incorporation)

Population (2020): 981

Population (historic): 511 (1890); 425 (1910); 412 (1930)

Periods of population growth: pre-1890; 1920–1950; 1970–2000
Pre-1940 residences (estimated): 91 (17%)
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