Oswego County, New York

Founding: 1816
Parent counties: Oneida and Onondaga
Namesake: The Oswego River
Seat: Oswego (1816–)
Land area: 952 square miles
Population (2020): 117,525
Population (historic): 12,374 (1820); 62,198 (1850); 77,941 (1870); 70,881 (1900); 69,645 (1930)
Periods of population growth: pre-1820–1870; 1900s; 1930–2000
Subdivisions: Two cities; nine villages; six CDPs; 22 towns
Pre-1940 residences (estimated): 14,626 (26.7%)
Pre-1940 housing survival rate: 76.5%
Pre-1860 housing survival rate (1940): 23.9%

Farm housing in disrepair (1950): 8.5%

Nonfarm housing in disrepair (1950): 6.2%

Average farmhouse value (1930): $1,470
Average outbuilding value (1930): $1,139

Average farmhouse size (1940): 7.5 rooms

Number of farms (1920): 5,539
Average farm size (1920): 49 acres
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Oswego

 
Namesake: Fort Oswego, which once occupied the city site
Founding: 1796 (founding); 1816 (post office); 1828 (incorporation)
Population (2020): 16,921
Population (historic): 12,205 (1850); 20,910 (1870); 21,842 (1890); 23,368 (1910); 22,652 (1930)
Periods of population growth: pre-1850–1920; 1940s; 2000s
Pre-1940 residences (estimated): 4,930 (58.1%)
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Outstanding Buildings

1. Oliver Payne Farm (c. 1865). 316 South Granby Road. Granby. Italianate.
2. Augustus Gardiner Farm (c. 1865). 177 State Route 176. Hannibal. Italianate.
3. Phineas Davis House (1874). 57 North Street. Mexico. Italianate.
4. Richard Jerrett House (1874–1877). 4566 State Route 104. New Haven. Italianate.
5. Thaddeus Brigham House (c. 1870). 7251 State Route 104. Oswego. Gothic Revival.
6. Thaddeus Brigham House (c. 1860). 7263 State Route 104. Oswego. Gothic Revival.
7. Farm (c. 1870). 222 Chesbro Road. Schroeppel. Italianate.
8. Henry Schroeppel House (1818). 1 County Road 10. Schroeppel. Greek Revival.
9. Nelson Corey Farm (c. 1865). 135 Godfrey Road. Schroeppel. Italianate.
10. Volkert Van Buren House (c. 1832). 2981 County Road 57. Volney. Federal.
11. David Van Buren House (1847). 50 Van Buren Drive. Volney. Greek Revival.
12. William Storey House (c. 1865). 181 State Route 13. Williamstown. Italianate.

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