Seneca County, New York

Founding: 1804
Parent county: Cayuga

Namesake: The Seneca people
Seats: Ovid (1804–) and Waterloo (1819–)

Land area: 324 square miles

Population (2020): 33,814

Population (historic): 16,609 (1810); 24,874 (1840); 27,823 (1870); 28,114 (1900); 24,983 (1930)

Periods of population growth: pre-1810–1820; 1830–1860; 1870s; 1920–1970; 2000s

Subdivisions: Four villages; two CDPs; ten towns

National Register listings: 42

Pre-1940 residences (estimated): 5,702 (35%)
Pre-1940 housing survival rate: 85.7%
Pre-1860 housing survival rate (1940): 20.4%

Farm housing in disrepair (1950): 7.6%

Nonfarm housing in disrepair (1950): 6.2%

Average farmhouse value (1930): $2,113
Average outbuilding value (1930): $2,083

Average farmhouse size (1940): 8 rooms
Number of farms (1920): 1,857
Average farm size (1920): 86.3 acres
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Ovid

Namesake: Ovid, Roman poet

Founding: 1802 (post office); 1816 (incorporation)

Population (2020): 534

Population (historic): 760 (1860); 705 (1880); 624 (1900); 537 (1930)

Periods of population growth: pre-1860; 1920–1960
Pre-1940 residences (estimated): 163 (55.4%)
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Waterloo

Namesake: Waterloo, Belgium

Founding: 1807 (platting); 1824 (incorporation); 1828 (post office)

Population (2020): 4,810

Population (historic): 3,375 (1860); 3,893 (1880); 4,256 (1900); 4,047 (1930)

Periods of population growth: pre-1860–1870; 1880s; 1920s; 1940–1970; 2000s
Pre-1940 residences (estimated): 965 (43.1%)
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Outstanding Buildings

1. *Chancey Pratt House (c. 1835). 9235 Schier Road. Covert. Greek Revival.
2. William Ditmars House (c. 1855/1890). 8176 State Route 96. Covert. Eastlake.
3. Erastus Gregg House (c. 1845). 9342 State Route 96. Covert. Greek Revival.
4. Orin Severn House (c. 1855). 3311 State Route 96A. Covert. Gothic Revival.
5. Henry Hoster Farm (c. 1865). 2497 Canoga Road. Fayette. Italianate.
6. *Rose Hill / Robert Swan Estate (1837). 3373 State Route 96A. Fayette. Greek Revival.
7. Martin Allen Farm (c. 1855). 3269 State Route 414. Fayette. Italianate.
8. *William Hoster Farm (c. 1830/1860). 3832 State Route 414. Fayette. Italianate.
9. *Henry Schankweiler Farm (c. 1813). 3319 Yost Road. Fayette. Federal.
10. *Daniel Mills Farm (c. 1840). 1229 Birdsey Road. Junius.
11. Abram Newton Farm (c. 1850). 311 Bostwick Road. Junius. Greek Revival.
12. *John Graves Farm (1837). 1370 State Route 318. Junius. Federal.
13. Ralph Smith House (c. 1845). 8334 North Main Street. Lodi. Greek Revival.
14. Richard Van Lew House (c. 1855). 9322 State Route 414. Lodi. Greek Revival/Gothic Revival.
15. *John Crisfield Farm (c. 1845). 8894 Upper Lake Road. Lodi. Greek Revival.
16. *Aaron Wilson Farm (c. 1835). 2037 Wilson Road. Ovid. Greek Revival.
17. *David Kinne Farm (c. 1850). 6858 Kinne Road. Romulus. Greek Revival.
18. William Savage House (c. 1870). 1930 Black Brook Road. Seneca Falls. Italianate.
19. *Julius Bull House (c. 1830). 2534 Lower Lake Road. Seneca Falls. Federal.
20. *Kingdom Tavern (remodeled c. 1860). 2137 US Highway 20. Seneca Falls. Italianate. Razed.
21. *Hiram Lay Farm (c. 1847). 1145 Old Schoolhouse Road. Tyre. Gothic Revival.
22. David O'Dell House (c. 1835). 874 Ridge Road. Tyre. Federal/Greek Revival.
23. Richard Wilcox House (c. 1875). 5621 East Lake Road. Varick. Second Empire.
24. *Simon Ritter House (c. 1830). 5102 State Route 89. Varick. Italianate.
25. Lewis Woodruff House (c. 1860). 1028 Yale Station Road. Varick. Italianate.
26. Bacon Farm (c. 1885). 1067 State Route 96. Waterloo. Romanesque.