Westmoreland County, Pennsylvania

Founding: 1773
Parent county: Bedford

Namesake: Westmoreland, England
Seat: Hannastown (1773–1785); Greensburg (1785–)

Land area: 1,028 square miles

Population (2020): 354,663

Population (historic): 16,019 (1790); 42,699 (1840); 58,719 (1870); 160,175 (1900); 294,995 (1930)

Periods of population growth: pre-1790–1980

Subdivisions: Seven cities; 38 boroughs; 21 CDPs; 21 townships

Pre-1940 residences (estimated): 36,433 (21.4%)
Pre-1940 housing survival rate: 55.9%
Pre-1860 housing survival rate (1940): 20.2%

Farm housing in disrepair (1950): 7.8%

Nonfarm housing in disrepair (1950): 6.4%
Average farmhouse value (1930): $2,018
Average outbuilding value (1930): $1,541

Average farmhouse size (1940): 6 rooms
Number of farms (1920): 5,593
Average farm size (1920): 62.9 acres

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Greensburg

Namesake: Nathanael Greene, Continental Army general

Founding: circa 1783 (founding as Newtown); 1791 (post office); 1799 (incorporation)

Population (2020): 14,976

Population (historic): 685 (1810); 800 (1840); 1,642 (1870); 6,508 (1900); 16,508 (1930)

Periods of population growth: pre-1810–1830; 1840–1960; 1970s; 2010s
Pre-1940 residences (estimated): 2,400 (31.1%)

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