Eau Claire County, Wisconsin

Founding: 1856
Parent county: Chippewa
Namesake: The Eau Claire River
Seat: Eau Claire (1856–)
Land area: 638 square miles
Population (2020): 105,710
Population (historic): 3,162 (1860); 19,993 (1880); 31,692 (1900); 41,087 (1930)
Periods of population growth: pre-1860–2020
Subdivisions: Three cities; two villages; one CDP; 13 towns
Pre-1940 residences (estimated): 6,485 (14.2%)
Pre-1940 housing survival rate: 61.9%
Pre-1860 housing survival rate (1940): 3.8%

Farm housing in disrepair (1950): 10.1%

Nonfarm housing in disrepair (1950): 4.6%

Average farmhouse value (1930): $1,619
Average outbuilding value (1930): $1,794

Average farmhouse size (1940): 6.6 rooms

Number of farms (1920): 2,368
Average farm size (1920): 82.1 acres
Sources of settlement: New York, Norway, Germany, and Canada
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Eau Claire

 
Namesake: The Eau Claire River
Founding: 1845 (founding); 1856 (post office); 1872 (incorporation)
Population (2020): 69,421
Population (historic): 2,293 (1870); 17,415 (1890); 18,310 (1910); 26,287 (1930)
Periods of population growth: pre-1870–2020
Pre-1940 residences (estimated): 4,281 (14.9%)
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