Rockbridge County, Virginia

Founding: 1778
Parent counties: Augusta and Botetourt

Namesake: Natural Bridge, a rock formation within the county
Seat: Lexington (1778–)

Land area: 598 square miles

Population (2020): 22,650

Population (historic): 6,548 (1790); 14,284 (1840); 16,058 (1870); 21,799 (1900); 20,902 (1930)

Periods of population growth: pre-1790–1860; 1870–1890; 1920–1960; 1970–2020

Subdivisions: Two cities; two towns

Pre-1940 residences (estimated): 1,589 (13.9%)
Pre-1940 housing survival rate: 35.1%
Pre-1860 housing survival rate (1940): 26.9%

Farm housing in disrepair (1950): 8.5%

Nonfarm housing in disrepair (1950): 28.3%
Average farmhouse value (1930): $1,554
Average outbuilding value (1930): $905
Average farmhouse size (1940): 6 rooms
Number of farms (1920): 2,014
Average farm size (1920): 73.4 acres
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Lexington

Namesake: Lexington, Massachusetts

Founding: 1778 (platting); 1792 (post office)

Population (2020): 7,320

Population (historic): 1,743 (1850); 2,873 (1870); 3,059 (1890); 2,931 (1910); 3,752 (1930)

Periods of population growth: pre-1850–1870; 1880–1900; 1920–1970; 2000–2020
Pre-1940 residences (estimated): 775 (31.7%)
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