Niagara County, New York

Founding: 1808
Parent county: Genesee
Namesake: The Niagara River
Seat: Lewiston  (1808–1822); Lockport (1822–)
Land area: 522 square miles
Population (2020): 212,666
Population (historic): 8,971 (1810); 31,132 (1840); 50,437 (1870); 74,961 (1900); 149,329 (1930)
Periods of population growth: pre-1810–1860; 1870–1960
Subdivisions: Three cities; five villages; seven CDPs; 12 towns
National Register listings: 98
Pre-1940 residences (estimated): 30,834 (30.7%)
Pre-1940 housing survival rate: 64.1%
Pre-1860 housing survival rate (1940): 32.5%

Farm housing in disrepair (1950): 6%

Nonfarm housing in disrepair (1950): 3.9%

Average farmhouse value (1930): $2,986
Average outbuilding value (1930): $2,512

Average farmhouse size (1940): 7.4 rooms

Number of farms (1920): 4,068
Average farm size (1920): 65.2 acres
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Lockport

 
Namesake: A reference to the Erie Canal, which bisects the city
Founding: 1818 (platting); 1822 (post office); 1865 (incorporation)
Population (2020): 20,876
Population (historic): 10,871 (1860); 13,522 (1880); 16,581 (1900); 23,160 (1930)
Periods of population growth: pre-1860–1960
Pre-1940 residences (estimated): 5,438 (51.9%)
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Outstanding Buildings

1. *Whitney Taylor House (c. 1840). 4975 Ridge Road. Cambria. Greek Revival.
2. *Farm (c. 1875). 9006 Ridge Road. Hartland. Italianate.
3. *Lewis Spalding House (c. 1830). 3484 Stone Road. Hartland. Federal.
4. *John Calkins House (c. 1860). 4072 Calkins Road. Lewiston. Gothic Revival.
5. *Leander Scovell House (1833). 775 Ridge Road. Lewiston. Greek Revival.
6. *Johann Haseley Farm (c. 1835). 2063 Saunders Settlement Road. Lewiston.
7. Hiram McCollum Farm (c. 1840). 248 North Adams Street. Lockport. Greek Revival.
8. *John LaBar House (c. 1875). 6964 Chestnut Ridge Road. Lockport. Italianate.
9. *Joseph Pound House (c. 1833). 291 Summit Street. Lockport. Greek Revival.
10. Nicholas Richardson House (c. 1835). 4878 Sunset Drive. Lockport. Greek Revival.
11. *Charles Wynkoop House (c. 1845). 5829 Wynkoop Road. Lockport. Greek Revival.
12. *James Van Horn House (1823/1900s). 2159 Lockport–Olcott Road. Newfane. Classical Revival.
13. *Charles McClew Farm (c. 1865). 2402 McClew Road. Newfane. Italianate.
14. *Henry Hand House (c. 1865). 2169 Youngstown–Lockport Road. Porter. Italianate.
15. *Dysinger Farm (c. 1840). 7800 Akron Road. Royalton. Greek Revival.
16. John Shafer House (c. 1870). 4326 Bolton Road. Royalton. Italianate.
17. *John McNall House (c. 1830). 7971 Chestnut Ridge Road. Royalton. Greek Revival.
18. *Guernsey Farm (1832). 9065 Chestnut Ridge Road. Royalton. Federal.
19. *George Gage House (c. 1855). 4585 Griswold Street. Royalton. Gothic Revival.
20. *Mabee Mill Ruins (1872). Quaker Road and Slayton Settlement Road. Royalton.
21. *Curtis Root House (c. 1870). 4049 Root Road. Royalton. Italianate.
22. Abel Bugbee House (c. 1835/1900). 7928 Slayton Settlement Road. Royalton. Federal/Classical Revival.
23. Day Farm (c. 1840). 8023 Slayton Settlement Road. Royalton. Greek Revival.
24. Philip Freeman House (c. 1875). 109 Telegraph Road. Royalton. Italianate.
25. *Frank Bradley Farm (c. 1895). 7397 Lake Road. Somerset. Queen Anne/Classical Revival.
26. *Jeptha Babcock Farm (c. 1848). 7449 Lake Road. Somerset. Greek Revival.
27. *Edwin Arnold Farm (c. 1875). 9017 Lake Road. Somerset. Italianate.
28. *Emerson Deming House (c. 1850). 6586 Shawnee Road. Wheatfield. Greek Revival. Razed.
29. *James Morse Farm (c. 1843). 2773 Maple Road. Wilson. Greek Revival.
30. *Alexander Pease Farm (1866). 4455 Wilson–Burt Road. Wilson. Queen Anne.
31. *Morgan Johnson House (c. 1840). 2501 Wilson–Cambria Road. Wilson. Greek Revival.