York County, Pennsylvania

Founding: 1749
Parent county: Lancaster
Namesake: The city of York
Seat: York (1749–)
Land area: 904 square miles
Population (2020): 456,438
Population (historic): 37,535 (1790); 47,010 (1840); 76,134 (1870); 116,413 (1900); 167,135 (1930)
Periods of population growth: pre-1790; 1800–2020
Subdivisions: One city; 36 boroughs; 17 CDPs; 35 townships
Pre-1940 residences (estimated): 35,151 (19%)
Pre-1940 housing survival rate: 75.1%
Pre-1860 housing survival rate (1940): 32.9%

Farm housing in disrepair (1950): 5.2%

Nonfarm housing in disrepair (1950): 3.1%

Average farmhouse value (1930): $1,784
Average outbuilding value (1930): $1,606

Average farmhouse size (1940): 7 rooms

Number of farms (1920): 7,818
Average farm size (1920): 53 acres
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York

 
Namesake: York, England
Founding: 1741 (platting); 1775 (post office); 1787 (incorporation)
Population (2020): 44,800
Population (historic): 2,096 (1790); 4,779 (1840); 11,003 (1870); 33,708 (1900); 55,254 (1930)
Periods of population growth: pre-1790–1950; 2000–2020
Pre-1940 residences (estimated): 10,014 (52.6%)
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