Bergen County, New Jersey

Founding: 1683
Parent county: Unorganized territory

Namesake: Uncertain—perhaps Bergen, North Holland
Seat: Bergen (1683–1710); Hackensack (1710–)

Land area: 233 square miles

Population (2020): 955,732

Population (historic): 12,601 (1790); 13,233 (1840); 30,122 (1870); 78,441 (1900); 364,977 (1930)

Periods of population growth: pre-1790–1830; 1840–1970; 1990–2020

Pre-1940 residences (estimated): 73,035 (20.4%)
Pre-1940 housing survival rate: 66.7%
Pre-1860 housing survival rate (1940): 33.4%

Farm housing in disrepair (1950): 2.7%

Nonfarm housing in disrepair (1950): 1.4%

Average farmhouse value (1930): $5,491
Average outbuilding value (1930): $3,693
Average farmhouse size (1940): 6.5 rooms
Number of farms (1920): 1,012
Average farm size (1920): 21.5 acres
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Hackensack

Namesake: The Hackensack River

Founding: 1690s (founding); 1797 (post office); 1921 (incorporation)

Population (2020): 46,030

Population (historic): 2,835 (1810); 2,104 (1840); 4,929 (1870); 9,443 (1900); 24,568 (1930)

Periods of population growth: pre-1810; 1830–1870; 1880–2020
Pre-1940 residences (estimated): 3,979 (19.5%)
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Outstanding Buildings

1. Blackledge–Kearney House (c. 1765/1840). Henry Hudson Drive. Alpine.
2. Abram Demaree House (c. 1765/1809/1870s). 2 Schraalenburgh Road. Closter.
3. Peter Huyler House (1836). 50 County Road. Cresskill. Federal.
4. Benjamin Westervelt House (1808). 235 County Road. Cresskill. Federal.
5. Samuel Demarest House (1817/1870s). 212 County Road. Demarest. Second Empire.
6. Daniel Demarest House (1724). 404 Washington Avenue. Dumont.
7. Peter Garretson House (c. 1720). 402 River Road. Fair Lawn.
8. John Bogert House (c. 1830/1895/1906). 163 Bogert's Mill Road. Harrington Park. Eastlake.
9. The Hermitage / Elijah Rosencrantz House (1847–1848). 335 Franklin Turnpike. Ho-Ho-Kus. Gothic Revival.
10. Vreeland House (1786/1815). 125 Lakeview Avenue. Leonia. Federal.
11. Jacobus Laroe House (c. 1750). 398 Ramapo Valley Road. Mahwah.
12. Darlington School (1891). 600 Ramapo Valley Road. Mahwah. Shingle.
13. Margaret Oldis House (c. 1830/1880). 279 Maywood Avenue. Maywood.
14. Abram Eckerson House (1796/1799/1890). 280 Chestnut Ridge Road. Montvale.
15. John Blauvelt House (c. 1810). 454 Tappan Road. Northvale.
16. Blauvelt House (18th century). 54 Tappan Road. Norwood.
17. Hendrick Van Allen House (c. 1740). 474 Ramapo Valley Road. Oakland.
18. Teunis Haring House (c. 1810/1840/1860/1900). 70 Old Tappan Road. Old Tappan. Federal.
19. Van Buskirk House (c. 1834). 467 Kinderkamack Road. Oradell. Federal.
20. Midland School (1876). 239 West Midland Avenue. Paramus. Gothic Revival.
21. Gardner House (c. 1808). 218 Paramus Road. Paramus. Federal.
22. Paramus Reformed Church (1800). 650 East Glen Avenue. Ridgewood. Gothic Revival.
23. David Ackerman House (c. 1750). 415 East Saddle River Road. Ridgewood.
24. Jacob Campbell House (c. 1775). 1201 Main Street. River Edge. Georgian.
25. Jan Zabriskie House (1754/1765). 1209 Main Street. River Edge.
26. John Haring House (c. 1805). 5 Piermont Road. Rockleigh.
27. Abram Ackerman House (1781/1880s). 199 East Saddle River Road. Saddle River.
28. The Cedars / Wandell House (c. 1865). 223 West Saddle River Road. Saddle River. Second Empire.
29. Roy House (c. 1865). 229 West Saddle River Road. Saddle River. Second Empire.
30. Daniel Westervelt House (c. 1798). 81 Westervelt Avenue. Tenafly.
31. Abraham Hopper House (1739/1860s). 363 East Saddle River Road. Upper Saddle River. Gothic Revival.
32. New North Reformed Church (1789). 481 East Saddle River Road. Upper Saddle River. Gothic Revival.
33. Van Voorhees House (c. 1740/1824). 421 Franklin Avenue. Wyckoff. Federal.

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