Beaver County, Pennsylvania
Founding: 1803 (declared in 1800) Parent counties: Allegheny and Washington Namesake: The Beaver River Seat: Beaver (1800–) Land area: 435 square miles Population (2020): 168,215 Population (historic): 5,776 (1800); 24,183 (1830); 29,140 (1860); 56,432 (1900); 149,062 (1930) Periods of population growth: pre-1800–1840; 1850–1970 Subdivisions: Two cities; 29 boroughs; two CDPs; 26 townships Pre-1940 residences (estimated): 19,922 (25.2%) Pre-1940 housing survival rate: 56.1% Pre-1860 housing survival rate (1940): 29.5% Farm housing in disrepair (1950): 8.3% Nonfarm housing in disrepair (1950): 5.9% Average farmhouse value (1930): $1,991 Average outbuilding value (1930): $1,332 Average farmhouse size (1940): 5.6 rooms Number of farms (1920): 2,514 Average farm size (1920): 63 acres ______________________________________________________________________...