Nassau County, New York

Founding: 1899
Parent county: Queens
Namesake: The House of Nassau
Seat: Mineola (1899–)
Land area: 285 square miles
Population (2020): 1,395,774
Population (historic): 55,448 (1900); 126,120 (1920); 303,053 (1930)
Periods of population growth: pre-1900–1970; 1990–2020
Subdivisions: Two cities; 62 villages; 69 CDPs; three towns
Pre-1940 residences (estimated): 96,663 (20.2%)
Pre-1940 housing survival rate: 73.2%

Farm housing in disrepair (1950): 2.9%

Nonfarm housing in disrepair (1950): 1.9%

Average farmhouse value (1930): $6,097
Average outbuilding value (1930): $6,570

Average farmhouse size (1940): 6.6 rooms

Number of farms (1920): 935
Average farm size (1920): 46.1 acres
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Mineola

 
Namesake: Miniolagamika, Algonquin chief
Founding: 1858 (post office); 1906 (incorporation)
Population (2020): 20,800
Population (historic): 313 (1880); 1,981 (1910); 3,016 (1920); 8,155 (1930)
Periods of population growth: pre-1910–1970; 1990s; 2010s
Pre-1940 residences (estimated): 2,469 (28.9%)
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