Adair County, Iowa

 

Founding: 1854 (declared in 1851)
Parent counties: Pottawattamie and unorganized territory

Namesake: John Adair, Kentucky governor
Seat: Fontanelle (1855–1875); Greenfield (1875–)

Land area: 569 square miles

Population (2020): 7,496

Population (historic): 984 (1860); 11,667 (1880); 16,192 (1900); 13,891 (1930)

Periods of population growth: pre-1860–1900

Subdivisions: Seven cities; 17 townships

National Register listings: Nine

Pre-1940 residences (estimated): 1,375 (37.2%)
Pre-1940 housing survival rate: 41.5%

Farm housing in disrepair (1950): 7.1%

Nonfarm housing in disrepair (1950): 6.7%

Average farmhouse value (1930): $1,925
Average outbuilding value (1930): $2,255
Average farmhouse size (1940): 6.4 rooms
Number of farms (1920): 2,113
Average farm size (1920): 151.9 acres
Sources of settlement: Illinois, Ohio, Indiana, Pennsylvania, and New York
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Greenfield

Namesake: A traditional name

Founding: 1856 (platting); 1856 (post office); 1876 (incorporation)

Population (2020): 2,062

Population (historic): 684 (1880); 1,300 (1900); 1,837 (1930)

Periods of population growth: pre-1880–1960; 1990s; 2010s
Pre-1940 residences (estimated): 345 (33.7%)
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Outstanding Buildings

1. House (c. 1915). 3070 State Route 25. Orient. Classical Revival.