Niagara County, New York

Founding: 1808
Parent county: Genesee
Namesake: The Niagara River
Seat: Lewiston  (1808–1822); Lockport (1822–)
Land area: 522 square miles
Population (2020): 212,666
Population (historic): 8,971 (1810); 31,132 (1840); 50,437 (1870); 74,961 (1900); 149,329 (1930)
Periods of population growth: pre-1810–1860; 1870–1960
Subdivisions: Three cities; five villages; seven CDPs; 12 towns
Pre-1940 residences (estimated): 30,834 (30.7%)
Pre-1940 housing survival rate: 64.1%
Pre-1860 housing survival rate (1940): 32.5%

Farm housing in disrepair (1950): 6%

Nonfarm housing in disrepair (1950): 3.9%

Average farmhouse value (1930): $2,986
Average outbuilding value (1930): $2,512

Average farmhouse size (1940): 7.4 rooms

Number of farms (1920): 4,068
Average farm size (1920): 65.2 acres
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Lockport

 
Namesake: A reference to the Erie Canal, which bisects the city
Founding: 1818 (platting); 1822 (post office); 1865 (incorporation)
Population (2020): 20,876
Population (historic): 10,871 (1860); 13,522 (1880); 16,581 (1900); 23,160 (1930)
Periods of population growth: pre-1860–1960
Pre-1940 residences (estimated): 5,438 (51.9%)
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