Isabella County, Michigan
Founding: 1859 (declared in 1831) Parent county: Unorganized territory Namesake: Queen Isabella I of Castile, Spanish monarch Seat: Isabella Center (1859–1860); Mount Pleasant (1860–) Land area: 573 square miles Population (2020): 64,394 Population (historic): 1,443 (1860); 12,159 (1880); 22,784 (1900); 21,126 (1930) Periods of population growth: pre-1860–1910; 1930–2010 Subdivisions: One city; three villages; three CDPs; 16 townships Pre-1940 residences (estimated): 3,094 (10.6%) Pre-1940 housing survival rate: 49.2% Farm housing in disrepair (1950): 12.3% Nonfarm housing in disrepair (1950): 9.7% Average farmhouse value (1930): $1,367 Average outbuilding value (1930): $1,463 Average farmhouse size (1940): 6.3 rooms Number of farms (1920): 3,333 Average farm size (1920): 63.5 acres Sources of settlement: Michigan, Canada, Ohio, New York, and Germa...