Genesee County, New York

Founding: 1803 (declared in 1802)
Parent county: Ontario
Namesake: The Genesee River
Seat: Batavia (1803–)
Land area: 493 square miles
Population (2020): 58,388
Population (historic): 12,588 (1810); 28,488 (1850); 31,606 (1870); 34,561 (1900); 44,468 (1930)
Periods of population growth: pre-1810–1860; 1870–2000
Subdivisions: One city; seven villages; one CDP; 13 towns
National Register listings: 26
Pre-1940 residences (estimated): 10,054 (39%)
Pre-1940 housing survival rate: 82.4%
Pre-1860 housing survival rate (1940): 31.5%

Farm housing in disrepair (1950): 11.7%

Nonfarm housing in disrepair (1950): 6.5%

Average farmhouse value (1930): $2,513
Average outbuilding value (1930): $2,688
Average farmhouse size (1940): 7.8 rooms
Number of farms (1920): 2,885
Average farm size (1920): 76 acres
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Batavia

 
Namesake: The region of Batavia, in the Netherlands
Founding: 1801 (platting); 1802 (post office); 1823 (incorporation)
Population (2020): 15,600
Population (historic): 1,671 (1830); 3,890 (1870); 9,180 (1900); 17,375 (1930)
Periods of population growth: pre-1830–1850; 1860–1930; 1940–1960
Pre-1940 residences (estimated): 3,305 (47.7%)
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Outstanding Buildings

1. William Amsden House (c. 1840). 2009 Lewiston Road. Alabama. Greek Revival.
2. Macomber Farm (c. 1875). 6912 Macumber Road. Alabama. Italianate.
3. Libbeus Allen Farm (c. 1835). 3328 Batavia–Oakfield Road. Batavia. Greek Revival.
4. *Aaron Gifford House (1870). 7083 North Bergen Road. Bergen. Gothic Revival.
5. James Goodwin Farm (c. 1840). 5633 Tower Hill Road. Byron. Greek Revival.
6. Anson Higley House (c. 1840). 4807 Edgerton Road. Elba. Greek Revival.
7. Alfred Ford House (c. 1840). 4899 Ford Road. Elba. Greek Revival.
8. Lorenzo Bovee House (c. 1875). 7768 Oatka Trail. LeRoy. Italianate.
9. House (c. 1840). 7175 West Main Road. LeRoy. Greek Revival.
10. James Sprague Farm (c. 1830). 6875 Ellicott Street Road. Pavilion. Federal.
11. *Mount Pleasant / Abram Mook Farm (1861). 2032 Indian Falls Road. Pembroke. Italianate.
12. William Radley House (c. 1845). 6248 Main Road. Stafford. Greek Revival.