Jackson County, Iowa

Founding: 1837
Parent county: Dubuque

Namesake: Andrew Jackson, U.S. president
Seat: Bellevue (1838–1841, 1848–1873); Andrew (1841–1848, 1848–1873); Maquoketa (1873–)

Land area: 584 square miles

Population (2020): 19,485

Population (historic): 1,411 (1840); 18,493 (1860); 23,771 (1880); 23,615 (1900); 18,481 (1930)

Periods of population growth: pre-1840–1880; 1890s; 1930s; 1950–1980; 1990s

Subdivisions: 12 cities; 18 townships

Pre-1940 residences (estimated): 2,759 (29%)
Pre-1940 housing survival rate: 59.7%
Pre-1860 housing survival rate (1940): 6.8%

Farm housing in disrepair (1950): 6.1%

Nonfarm housing in disrepair (1950): 10%

Average farmhouse value (1930): $2,616
Average outbuilding value (1930): $3,311
Average farmhouse size (1940): 7.1 rooms
Number of farms (1920): 2,327
Average farm size (1920): 114.5 acres
Sources of settlement: Germany, New York, Pennsylvania, Ohio, Illinois, Luxembourg, and Ireland
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Bellevue (ex-seat)

Namesake: A simultaneous reference to John Bell (owner of the townsite) and the city's view of the Mississippi River

Founding: 1835 (platting); 1846 (post office); 1851 (incorporation)

Population (2020): 2,363

Population (historic): 362 (1850); 1,353 (1870); 1,394 (1890); 1,776 (1910); 1,717 (1930)

Periods of population growth: 1835–1880; 1890–1910; 1920–1980; 1990s; 2010s
Pre-1940 residences (estimated): 443 (40.8%)
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Maquoketa

Namesake: The Maquoketa River

Founding: 1838 (platting as Springfield); 1840 (post office); 1857 (incorporation)

Population (2020): 6,128

Population (historic): 168 (1850); 1,756 (1870); 3,077 (1890); 3,570 (1910); 3,595 (1930)

Periods of population growth: 1838–1900; 1910s; 1930–1960; 1970s
Pre-1940 residences (estimated): 755 (25%)
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