Passaic County, New Jersey

Founding: 1837
Parent counties: Bergen and Essex

Namesake: The Passaic River
Seat: Paterson (1837–)

Land area: 185 square miles

Population (2020): 524,118

Population (historic): 16,734 (1840); 29,013 (1860); 68,860 (1880); 155,202 (1900); 302,129 (1930)

Periods of population growth: pre-1840–1970; 1980–2020

Subdivisions: Three cities; ten boroughs; three townships

Pre-1940 residences (estimated): 37,335 (21.1%)
Pre-1940 housing survival rate: 49.2%
Pre-1860 housing survival rate (1940): 21.9%

Farm housing in disrepair (1950): 3.8%

Nonfarm housing in disrepair (1950): 5.5%
Average farmhouse value (1930): $4,591
Average outbuilding value (1930): $3,176
Average farmhouse size (1940): 6.5 rooms
Number of farms (1920): 475
Average farm size (1920): 25.4 acres
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Paterson

Namesake: William Paterson, New Jersey politician

Founding: 1791 (platting); 1829 (post office); 1831 (incorporation)

Population (2020): 159,732

Population (historic): 7,596 (1840); 19,586 (1860); 51,031 (1880); 105,171 (1900); 138,513 (1930)

Periods of population growth: pre-1840–1940; 1950–1970; 1980–2000; 2010s
Pre-1940 residences (estimated): 13,037 (26.4%)
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