Jefferson County, Mississippi

Founding: 1802 (declared in 1799)
Parent county: Unorganized territory

Namesake: Thomas Jefferson, U.S. president
Seat: Greenville (1803–1825); Fayette (1825–)

Land area: 520 square miles

Population (2020): 7,260

Population (historic): 2,940 (1800); 11,650 (1840); 13,848 (1870); 21,292 (1900); 14,291 (1930)

Periods of population growth: pre-1800–1860; 1870–1900; 1990s

Subdivisions: One city

Pre-1940 residences (estimated): 245 (6.6%)
Pre-1940 housing survival rate: 5.8%
Pre-1860 housing survival rate (1940): 10.1%

Farm housing in disrepair (1950): 42.8%

Nonfarm housing in disrepair (1950): 35.4%

Average farmhouse value (1930): $348
Average outbuilding value (1930): $120
Average farmhouse size (1940): 3.6 rooms
Number of farms (1920): 2,942
Average farm size (1920): 39.7 acres
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Fayette

Namesake: The Marquis de Lafayette, Continental Army general

Founding: 1825 (platting); 1826 (post office); 1842 (incorporation)

Population (2020): 1,445

Population (historic): 210 (1850); 120 (1870); 369 (1880); 604 (1900); 848 (1930)

Periods of population growth: pre-1850–1860; 1870–1980; 1990s
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