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

National Register listings: 278

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 (c. 1770?). 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.