Clay County, Texas

Founding: 1873 (declared in 1857)
Parent county: Cooke
Namesake: Henry Clay, Kentucky politician
Seat: Henrietta (1873–)
Land area: 1,089 square miles
Population (2020): 10,218
Population (historic): 5,045 (1880); 9,231 (1900); 14,545 (1930)
Periods of population growth: 1870–1910; 1970–2000
Subdivisions: Six cities
National Register listings: Two
Pre-1940 residences (estimated): 410 (8%)
Pre-1940 housing survival rate: 22.1%

Farm housing in disrepair (1950): 24.6%

Nonfarm housing in disrepair (1950): 14.4%

Average farmhouse value (1930): $829
Average outbuilding value (1930): $507

Average farmhouse size (1940): 4.3 rooms

Number of farms (1920): 2,118
Average farm size (1920): 130.6 acres
Sources of settlement: Texas, Tennessee, Arkansas, and Missouri
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Henrietta

 
Namesake: Unknown
Founding: 1857 (platting); 1862 (post office); 1881 (incorporation)
Population (2020): 3,111
Population (historic): 2,100 (1890); 2,104 (1910); 2,020 (1930)
Periods of population growth: pre-1890; 1900–1920; 1930–1960; 1970s; 1990s
Pre-1940 residences (estimated): 72 (5.3%)
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Outstanding Buildings

1. *John Sanzenbacher Ranch (1890/1910). 2510 Sanzenbacher Road. Italianate/Classical Revival.