Rockland County, New York

Founding: 1798
Parent county: Orange
Namesake: A descriptive name
Seat: New City (1798–)
Land area: 174 square miles
Population (2020): 338,329
Population (historic): 6,353 (1800); 11,975 (1840); 25,213 (1870); 38,298 (1900); 59,599 (1930)
Periods of population growth: pre-1800–1910; 1920–2020
Subdivisions: 19 villages; 17 CDPs; five towns
Pre-1940 residences (estimated): 14,163 (13.3%)
Pre-1940 housing survival rate: 69.3%
Pre-1860 housing survival rate (1940): 31.5%

Farm housing in disrepair (1950): 4.1%

Nonfarm housing in disrepair (1950): 4.1%

Average farmhouse value (1930): $5,662
Average outbuilding value (1930): $6,129

Average farmhouse size (1940): 6.5 rooms
Number of farms (1920): 831
Average farm size (1920): 25.6 acres
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New City

 
Namesake: A descriptive name
Founding: 1798 (founding); 1876 (post office)
Population (2020): 34,135
Pre-1940 residences (estimated): 796 (6.7%)
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Outstanding Buildings

1. Valley Cottage / DeBaun–Green House (1824/1850s). 458 Kings Highway. Clarkstown. Gothic Revival.
2. Jacob Blauvelt House (1832). 20 Zukor Road. Clarkstown.
3. Fraser House (c. 1812). 17 US Highway 9W. Haverstraw. Federal.
4. Michael Salyer House (c. 1790). 213 Blue Hill Road. Orangetown.
5. Daniel DeClark House (1700). 20 Livingston Street. Orangetown.
6. Stonehurst / Isaac Dederer House (1865). 63 Rockland Road. Orangetown. Gothic Revival.
7. House (c. 1735/1867). 201 US Highway 9W. Orangetown. Gothic Revival.
8. James Hopson House (c. 1850/1869/1920). 435 US Highway 9W. Orangetown. Second Empire.
9. West Hempstead Reformed Church (1856). 220 Brick Church Road. Ramapo. Greek Revival.
10. Torne Brook Farm / Charles Pierson Estate (c. 1872/1920). 1 Torne Brook Road. Ramapo. Italianate/Eastlake.
11. Watson Tomkins House (1872). 73 North Liberty Drive. Stony Point. Italianate/Gothic Revival.
12. Bear Mountain Inn (1915). 99 Service Road. Stony Point. Adirondack.

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