Platte County, Missouri

Founding: 1838
Parent county: Unorganized territory

Namesake: The Platte River
Seat: Platte City (1838–)

Land area: 420 square miles

Population (2020): 106,718

Population (historic): 8,913 (1840); 18,350 (1860); 17,366 (1880); 16,193 (1900); 13,819 (1930)

Periods of population growth: pre-1840–1860; 1870s; 1930–2020

Subdivisions: 13 cities; four villages; 14 townships

National Register listings: 16

Pre-1940 residences (estimated): 2,021 (4.9%)
Pre-1940 housing survival rate: 44.7%
Pre-1860 housing survival rate (1940): 8.6%

Farm housing in disrepair (1950): 15.5%

Nonfarm housing in disrepair (1950): 13.3%

Average farmhouse value (1930): $1,749
Average outbuilding value (1930): $1,436
Average farmhouse size (1940): 5.2 rooms
Number of farms (1920): 2,021
Average farm size (1920): 92.6 acres
Sources of settlement: Kentucky, Virginia, Ohio, Illinois, Indiana, and Germany
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Platte City

Namesake: The Platte River

Founding: 1838 (platting); 1839 (post office); 1843 (incorporation)

Population (2020): 4,784

Population (historic): 495 (1850); 599 (1870); 706 (1890); 763 (1910); 587 (1930)

Periods of population growth: pre-1850–1860; 1870–1910; 1920–2020
Pre-1940 residences (estimated): 123 (6.2%)
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Outstanding Buildings

1. James Miller Farm (c. 1895). 21550 State Route 92. Fair. Queen Anne.
2. The Cedars / Clinton Cockrill Farm (c. 1905). 22230 State Route 92. Fair. Classical Revival.
3. William Cox Farm (c. 1850). 23670 Road H. Marshall. Greek Revival.
4. Charles Ross Farm (c. 1855). 23195 Road M. Marshall. Greek Revival.
5. Locust Grove / Siler House (c. 1855). 25180 Road JJ. Weston. Greek Revival.
6. Jacob Cox House (1856). 19015 Road P. Weston. Italianate.
7. William Lamar Farm (c. 1850). 20100 Road P. Weston. Greek Revival.
8. Charles Hall House (c. 1855). 23875 State Route 273. Weston.