Sierra County, California

Founding: 1852
Parent county: Yuba

Namesake: The Sierra Nevada
Seat: Downieville (1852–)

Land area: 953 square miles

Population (2020): 3,236

Population (historic): 11,387 (1860); 6,623 (1880); 4,017 (1900); 2,422 (1930)

Periods of population growth: pre-1860; 1870s; 1900s; 1920–1940; 1960–2000

Subdivisions: One city; ten CDPs

National Register listings: 14

Pre-1940 residences (estimated): 505 (21.1%)
Pre-1940 housing survival rate: 45.1%

Farm housing in disrepair (1950): 21.8%

Nonfarm housing in disrepair (1950): 18.3%

Average farmhouse value (1930): $1,344
Average outbuilding value (1930): $2,323
Average farmhouse size (1940): 5.2 rooms
Number of farms (1920): 77
Average farm size (1920): 280.6 acres
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Downieville

Namesake: 1849 (founding); 1852 (post office)

Founding: William Downie, Scottish prospector

Population (2020): 290

Pre-1940 residences (estimated): 79 (50%)
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