Lawrence County, Missouri

Founding: 1845 (declared in 1843)
Parent counties: Barry and Dade

Namesake: James Lawrence, U.S. naval officer
Seat: Mount Vernon (1845–)

Land area: 612 square miles

Population (2020): 38,001

Population (historic): 4,859 (1850); 12,977 (1870); 26,228 (1890); 26,583 (1910); 23,774 (1930)

Periods of population growth: pre-1850–1900; 1930s; 1960–2010

Subdivisions: Eight cities; three villages; one CDP; 14 townships

National Register listings: Five

Pre-1940 residences (estimated): 2,669 (16%)
Pre-1940 housing survival rate: 44.6%
Pre-1860 housing survival rate (1940): 1.8%

Farm housing in disrepair (1950): 10.5%

Nonfarm housing in disrepair (1950): 6.7%
Average farmhouse value (1930): $971
Average outbuilding value (1930): $690
Average farmhouse size (1940): 4.9 rooms
Number of farms (1920): 2,979
Average farm size (1920): 94.3 acres
Sources of settlement: Missouri, Tennessee, Illinois, Kentucky, and Indiana
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Mount Vernon

Namesake: Mount Vernon, George Washington's estate

Founding: 1845 (platting); 1845 (incorporation); 1846 (post office)

Population (2020): 4,575

Population (historic): 441 (1860); 527 (1880); 1,206 (1900); 1,342 (1930)

Periods of population growth: pre-1860–1870; 1880–1900; 1910–2010
Pre-1940 residences (estimated): 139 (6.7%)
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