Ionia County, Michigan

Founding: 1837 (declared in 1831)
Parent county: Unorganized territory

Namesake: The Anatolian region of Ionia
Seat: Ionia (1837–)

Land area: 571 square miles

Population (2020): 66,804

Population (historic): 1,923 (1840); 16,682 (1860); 33,872 (1880); 34,329 (1900); 35,093 (1930)

Periods of population growth: pre-1840–1880; 1890s; 1950s; 1920–2020

Subdivisions: Three cities; six villages; 16 townships

National Register listings: 16

Pre-1940 residences (estimated): 6,311 (25.4%)
Pre-1940 housing survival rate: 65.4%
Pre-1860 housing survival rate (1940): 11.2%

Farm housing in disrepair (1950): 9.6%

Nonfarm housing in disrepair (1950): 9.1%
Average farmhouse value (1930): $1,747
Average outbuilding value (1930): $1,840

Average farmhouse size (1940): 7.3 rooms
Number of farms (1920): 3,223
Average farm size (1920): 82.7 acres
Sources of settlement: New York, Ohio, and Canada
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Ionia

Namesake: The Anatolian region of Ionia

Founding: 1835 (post office); 1865 (incorporation)

Population (2020): 13,378

Population (historic): 2,500 (1870); 5,209 (1900); 6,562 (1930)

Periods of population growth: pre-1870–1880; 1890s; 1910s; 1990s
Pre-1940 residences (estimated): 1,392 (44.2%)
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Outstanding Buildings

1. Scoville Farm (c. 1905). 9530 Nash Highway. Campbell. Shingle/Classical Revival.