Clay County, Kentucky

Founding: 1807
Parent counties: Floyd, Knox, and Madison

Namesake: Green Clay, Kentucky politician
Seat: Manchester (1807–)

Land area: 469 square miles

Population (2020): 20,345 

Population (historic): 2,398 (1810); 4,607 (1840); 8,297 (1870); 15,364 (1900); 18,526 (1930)

Periods of population growth: pre-1810–1820; 1830–1920; 1930s; 1970s; 1990s

Subdivisions: One city; one CDP

National Register listings: Six

Pre-1940 residences (estimated): 431 (4.8%)
Pre-1940 housing survival rate: 12.8%
Pre-1860 housing survival rate (1940): 2%

Farm housing in disrepair (1950): 44.4%

Nonfarm housing in disrepair (1950): 41%

Average farmhouse value (1930): $263
Average outbuilding value (1930): $127
Average farmhouse size (1940): 3.5 rooms
Number of farms (1920): 3,088
Average farm size (1920): 35.5 acres
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Manchester

Namesake: Manchester, England

Founding: 1807 (platting); 1813 (post office); 1844 (incorporation)

Population (2020): 1,512

Population (historic): 97 (1880); 398 (1900); 1,509 (1940)

Periods of population growth: pre-1880–1940; 2010s
Pre-1940 residences (estimated): 56 (7.5%)
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