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

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); 1841 (platting); 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. LeRoy Scoville Farm (c. 1905). 9530 Nash Highway. Campbell. Shingle/Classical Revival.
2. Spaulding School (c. 1875). 915 South Stage Road. Ionia. Italianate.
3. William Welsh Farm (c. 1875). 8861 Kimball Road. Lyons. Italianate.
4. William Keefer Farm (c. 1880). 3246 South Keefer Highway. Orange. Italianate.
5. Luther Hall Farm (1883). 3363 North State Road. Orleans. Italianate.
6. John Olry House (1878). 3226 East Musgrove Highway. Sebewa. Italianate.

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