Boone County, Iowa

Founding: 1849 (declared in 1846)
Parent county: Unorganized territory

Namesake: Nathan Boone, Missouri frontiersman
Seat: Boone (1851–)

Land area: 572 square miles

Population (2020): 26,715

Population (historic): 735 (1850); 14,584 (1870); 23,772 (1890); 27,626 (1910); 29,271 (1930)

Periods of population growth: pre-1850–1900; 1910s; 1930s; 1990–2020

Subdivisions: Nine cities; 17 townships

National Register listings: 20

Pre-1940 residences (estimated): 4,435 (37.1%)
Pre-1940 housing survival rate: 58.5%

Farm housing in disrepair (1950): 3.6%

Nonfarm housing in disrepair (1950): 4.4%

Average farmhouse value (1930): $2,217
Average outbuilding value (1930): $2,224
Average farmhouse size (1940): 6.6 rooms
Number of farms (1920): 2,541
Average farm size (1920): 112.9 acres
Sources of settlement: Sweden, Illinois, Ohio, New York, Indiana, Pennsylvania, and Germany
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Boone

Namesake: Nathan Boone, Missouri frontiersman

Founding: 1851 (platting as Boonesborough); 1851 (post office); 1866 (incorporation)

Population (2020): 12,460

Population (historic): 3,330 (1880); 8,880 (1900); 11,886 (1930)

Periods of population growth: pre-1880–1920; 1930s; 1950–1980; 1990s
Pre-1940 residences (estimated): 2,357 (40.8%)
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Outstanding Buildings

1. *James Sturtz House (1868). 1411 160th Road. Dodge. Italianate.
2. Jonas Soderberg Farm (c. 1890). 23 R Road. Dodge. Italianate/Eastlake.
3. *James Moss House (c. 1860). 1680 Q Road. Worth.
4. *Clark Luther Farm (c. 1860). 1704 Q Road. Worth.