Cumberland County, Pennsylvania

Founding: 1750
Parent county: Lancaster

Namesake: Cumberland, England
Seat: Carlisle (1751–)

Land area: 545 square miles

Population (2020): 259,469

Population (historic): 18,208 (1790); 30,953 (1840); 43,912 (1870); 50,344 (1900); 68,236 (1930)

Periods of population growth: pre-1790–1810; 1820–2020

Subdivisions: 11 boroughs; nine CDPs; 22 townships

Pre-1940 residences (estimated): 19,092 (17.9%)
Pre-1940 housing survival rate: 76.8%
Pre-1860 housing survival rate (1940): 33.3%

Farm housing in disrepair (1950): 12.2%

Nonfarm housing in disrepair (1950): 4.9%
Average farmhouse value (1930): $2,132
Average outbuilding value (1930): $2,099
Average farmhouse size (1940): 7.2 rooms
Number of farms (1920): 3,115
Average farm size (1920): 71.3 acres
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Carlisle

Namesake: Carlisle, England

Founding: 1751 (platting); 1782 (incorporation); 1788 (post office)

Population (2020): 20,118

Population (historic): 2,052 (1800); 4,351 (1840); 6,650 (1870); 9,626 (1900); 12,596 (1930)

Periods of population growth: pre-1800–1870; 1880–1950; 1960–1990; 2000–2020
Pre-1940 residences (estimated): 3,318 (39.8%)
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