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

National Register listings: Six

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 Germany
_________________________________________________________________________________

Mount Pleasant

Namesake: A descriptive name

Founding: 1860 (platting); 1869 (post office); 1875 (incorporation)

Population (2020): 21,688

Population (historic): 1,115 (1880); 3,662 (1900); 5,211 (1930)

Periods of population growth: 1860–1980; 1990–2010
Pre-1940 residences (estimated): 1,221 (13.2%)
_________________________________________________________________________________



View and filter the data. Or see a larger map.