Allegany County, New York

Founding: 1806
Parent county: Genesee

Namesake: The Allegheny Mountains
Seat: Angelica (1806–1859); Belmont (1859–)

Land area: 1,029 square miles

Population (2020): 46,456

Population (historic): 1,942 (1810); 40,975 (1840); 40,814 (1870); 41,501 (1900); 38,025 (1930)

Periods of population growth: pre-1810–1840; 1850s; 1870–1890; 1920–1980

Subdivisions: Ten villages; seven CDPs; 29 towns

Pre-1940 residences (estimated): 8,545 (32.4%)
Pre-1940 housing survival rate: 75.1%
Pre-1860 housing survival rate (1940): 23.2%

Farm housing in disrepair (1950): 11.6%

Nonfarm housing in disrepair (1950): 7.1%

Average farmhouse value (1930): $1,479
Average outbuilding value (1930): $1,561
Average farmhouse size (1940): 7.8 rooms
Number of farms (1920): 4,405
Average farm size (1920): 75.3 acres
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Belmont

Namesake: A traditional name

Founding: 1830s (founding as Philipsville); 1838 (post office); 1871 (incorporation)

Population (2020): 856

Population (historic): 795 (1870); 950 (1890); 1,094 (1910); 1,085 (1930)

Periods of population growth: pre-1870–1900; 1920–1950
Pre-1940 residences (estimated): 271 (63.9%)
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