Ontario County, New York
Founding: 1789 Parent county: Montgomery Namesake: Lake Ontario Seat: Canandaigua (1789–) Land area: 644 square miles Population (2020): 112,458 Population (historic): 1,075 (1790); 43,501 (1840); 45,108 (1870); 49,605 (1900); 54,276 (1930) Periods of population growth: 1790–1880; 1890–2020 Subdivisions: Two cities; eight villages; three CDPs; 16 towns Pre-1940 residences (estimated): 14,687 (28.4%) Pre-1940 housing survival rate: 86.5% Pre-1860 housing survival rate (1940): 34.3% Farm housing in disrepair (1950): 5.3% Nonfarm housing in disrepair (1950): 5.2% Average farmhouse value (1930): $2,433 Average outbuilding value (1930): $2,442 Average farmhouse size (1940): 8 rooms Number of farms (1920): 4,062 Average farm size (1920): 73 acres _________________________________________________________________________________ Canandaigua Namesake: A Seneca vil...