Johnson County, Missouri

 

Founding: 1834
Parent counties: Cass and Lafayette

Namesake: Richard Johnson, Kentucky politician
Seat: Columbus (1834–1836); Warrensburg (1836–)

Land area: 829 square miles

Population (2020): 54,013

Population (historic): 4,471 (1840); 14,614 (1860); 28,172 (1880); 27,843 (1900); 22,413 (1930)

Periods of population growth: pre-1840–1880; 1950–2020

Subdivisions: Five cities; two villages; two CDPs; 15 townships

National Register listings: 22

Pre-1940 residences (estimated): 1,937 (8.7%)
Pre-1940 housing survival rate: 32.2%
Pre-1860 housing survival rate (1940): 4.2%

Farm housing in disrepair (1950): 9.1%

Nonfarm housing in disrepair (1950): 8.1%

Average farmhouse value (1930): $1,337
Average outbuilding value (1930): $1,099
Average farmhouse size (1940): 5.2 rooms
Number of farms (1920): 3,590
Average farm size (1920): 121.9 acres
Sources of settlement: Kentucky, Virginia, Ohio, Pennsylvania, Illinois, Indiana, and Tennessee
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Warrensburg

Namesake: John and Martin Warren, owners of the city site

Founding: 1836 (platting); 1837 (post office); 1857 (replatting)

Population (2020): 20,313

Population (historic): 241 (1850); 2,945 (1870); 4,706 (1890); 4,689 (1910); 5,146 (1930)

Periods of population growth: pre-1850–1900; 1910–2020
Pre-1940 residences (estimated): 738 (9.2%)
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Outstanding Buildings

1. *LeRoy Stoner House (1870). 559 Road VV. Centerview. Greek Revival/Italianate.
2. *Miller Mausoleum (1917–1937). State Route 131, north of Holden. Madison. Gothic Revival.
3. *George Ludwig House (1884). 1241 Anderson Road. Rose Hill. Italianate.