Chautauqua County, New York

Founding: 1811 (declared in 1808)
Parent county: Genesee

Namesake: Chautauqua Lake
Seat: Mayville (1811–)

Land area: 1,060 square miles

Population (2020): 127,657

Population (historic): 12,568 (1820); 50,493 (1850); 59,327 (1870); 88,314 (1900); 126,457 (1930)

Periods of population growth: pre-1820–1930; 1940–1970

Subdivisions: Two cities; 13 villages; nine CDPs; 27 towns

Pre-1940 residences (estimated): 24,968 (36.9%)
Pre-1940 housing survival rate: 75.7%
Pre-1860 housing survival rate (1940): 30.8%

Farm housing in disrepair (1950): 9.8%

Nonfarm housing in disrepair (1950): 3.7%

Average farmhouse value (1930): $2,116
Average outbuilding value (1930): $1,647
Number of farms (1920): 7,100
Average farm size (1920): 50.9 acres
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Mayville

Namesake: Unknown

Founding: circa 1807 (founding); 1812 (post office); 1830 (incorporation)

Population (2020): 1,442

Population (historic): 701 (1870); 1,164 (1890); 1,122 (1910); 1,273 (1930)

Periods of population growth: pre-1870–1890; 1900–1960; 1970–2000
Pre-1940 residences (estimated): 301 (38.4%)
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