Johnson County, Tennessee

Founding: 1836
Parent county: Carter

Namesake: Thomas Johnson, local resident
Seat: Mountain City (1836–)

Land area: 298 square miles

Population (2020): 17,948

Population (historic): 2,658 (1840); 5,018 (1860); 7,766 (1880); 10,589 (1900); 12,209 (1930)

Periods of population growth: pre-1840–1910; 1930s; 1960–2010

Subdivisions: One town

National Register listings: Eight

Pre-1940 residences (estimated): 670 (7.4%)
Pre-1940 housing survival rate: 30.9%
Pre-1860 housing survival rate (1940): 6.1%

Farm housing in disrepair (1950): 21.8%

Nonfarm housing in disrepair (1950): 29.7%

Average farmhouse value (1930): $958
Average outbuilding value (1930): $322
Average farmhouse size (1940): 4.7 rooms
Number of farms (1920): 1,672
Average farm size (1920): 40 acres
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Mountain City

Namesake: The locale's rugged terrain

Founding: 1836 (platting as Taylorsville); 1836 (post office); 1905 (incorporation)

Population (2020): 2,415

Population (historic): 118 (1850); 236 (1870); 249 (1890); 592 (1910); 1,058 (1930)

Periods of population growth: pre-1850–1880; 1910–1930; 1940s; 1960–2010
Pre-1940 residences (estimated): 100 (7.4%)
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Outstanding Buildings

1. *David Vaught Farm (c. 1865). 740 Cracker's Neck Road. Greek Revival.
2. *Donnelly House (c. 1845/1870s). 1307 Divide Road.
3. *Maywood / Wiley Mount House (1930). 200 Maywood Lane. Georgian Revival.
4. *Rhea House (c. 1866). 2431 South Shady Street. Burned in 1983.