Harrison County, Iowa

Founding: 1853 (declared in 1851)
Parent counties: Pottawattamie and unorganized territory

Namesake: William Harrison, U.S. president
Seat: Magnolia (1853–1875); Logan (1875–)

Land area: 697 square miles

Population (2020): 14,582

Population (historic): 3,621 (1860); 16,649 (1880); 25,597 (1900); 24,897 (1930)

Periods of population growth: pre-1860–1900; 1910–1930; 1990s

Subdivisions: Ten cities; two CDPs; 20 townships

National Register listings: 14

Pre-1940 residences (estimated): 2,874 (42.1%)
Pre-1940 housing survival rate: 50%

Farm housing in disrepair (1950): 9.2%

Nonfarm housing in disrepair (1950): 9.2%

Average farmhouse value (1930): $1,923
Average outbuilding value (1930): $1,948
Average farmhouse size (1940): 6 rooms
Number of farms (1920): 2,881
Average farm size (1920): 114.8 acres
Sources of settlement: Ohio, New York, Illinois, Indiana, and Pennsylvania
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Logan

Namesake: John Logan, Illinois politician

Founding: 1867 (platting); 1867 (post office); 1876 (incorporation)

Population (2020): 1,397

Population (historic): 644 (1880); 1,377 (1900); 1,654 (1930)

Periods of population growth: 1867–1940; 1950s; 1990s
Pre-1940 residences (estimated): 317 (45.4%)
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Outstanding Buildings

1. Samuel Boone House (c. 1895). 1934 Perry Road. Boyer. Queen Anne.