Putnam County, Missouri

Founding: 1845 (declared in 1843)
Parent county: Unorganized territory

Namesake: Israel Putnam, Continental Army general
Seat: Putnamville (1845–1849); Bryant Station (1849–1851); Hartford (1851–1853); Unionville (1853–)

Land area: 517 square miles

Population (2020): 4,681

Population (historic): 1,636 (1850); 11,217 (1870); 15,365 (1890); 14,308 (1910); 11,503 (1930)

Periods of population growth: pre-1850–1900; 1970s; 1990s

Subdivisions: One city; four villages; one CDP; 11 townships

National Register listings: One

Pre-1940 residences (estimated): 536 (18%)
Pre-1940 housing survival rate: 21%
Pre-1860 housing survival rate (1940): 0.8%

Farm housing in disrepair (1950): 16.7%

Nonfarm housing in disrepair (1950): 13.3%

Average farmhouse size (1940): 5.1 rooms
Average farmhouse value (1930): $1,063
Average outbuilding value (1930): $723
Number of farms (1920): 2,153
Average farm size (1920): 120.7 acres
Sources of settlement: Iowa, Ohio, Indiana, Illinois, and Kentucky
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Unionville

Namesake: Uncertain—likely a traditional name

Founding: 1853 (platting as Harmony); 1854 (post office)

Population (2020): 1,735

Population (historic): 227 (1860); 772 (1880); 2,050 (1900); 1,811 (1930)

Periods of population growth: 1853–1900; 1920–1940; 1960–1980; 1990s
Pre-1940 residences (estimated): 151 (15%)
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