Delaware County, New York

Founding: 1797
Parent counties: Otsego and Ulster

Namesake: The Delaware River
Seat: Delhi (1799–)

Land area: 1,442 square miles

Population (2020): 44,308

Population (historic): 10,228 (1800); 35,396 (1840); 42,972 (1870); 46,413 (1900); 41,163 (1930)

Periods of population growth: pre-1800–1870; 1880–1900; 1940s; 1960–2000

Subdivisions: Ten villages; four CDPs; 19 towns

Pre-1940 residences (estimated): 9,411 (29.8%)
Pre-1940 housing survival rate: 72.9%
Pre-1860 housing survival rate (1940): 33.2%

Farm housing in disrepair (1950): 11.9%

Nonfarm housing in disrepair (1950): 7.1%

Average farmhouse value (1930): $1,998
Average outbuilding value (1930): $2,256
Average farmhouse size (1940): 8.2 rooms
Number of farms (1920): 4,613
Average farm size (1920): 91.5 acres
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Delhi

Namesake: Delhi, India

Founding: circa 1797 (founding); 1801 (post office); 1821 (incorporation)

Population (2020): 2,721

Population (historic): 1,201 (1860); 1,384 (1880); 2,078 (1900); 1,840 (1930)

Periods of population growth: pre-1860–1900; 1920s; 1940–1980; 2000s
Pre-1940 residences (estimated): 505 (56.1%)
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