Ashtabula County, Ohio

Founding: 1811 (declared in 1808)
Parent counties: Geauga and Trumbull

Namesake: The Ashtabula River
Seat: Jefferson (1811–)

Land area: 702 square miles

Population (2020): 97,574

Population (historic): 7,382 (1820); 31,814 (1860); 37,139 (1880); 51,448 (1900); 68,631 (1930)

Periods of population growth: pre-1820–1980; 1990s

Subdivisions: Three cities; seven villages; two CDPs; 27 townships

National Register listings: 42

Pre-1940 residences (estimated): 14,383 (31.3%)
Pre-1940 housing survival rate: 62.5%
Pre-1860 housing survival rate (1940): 37.7%

Farm housing in disrepair (1950): 15.4%

Nonfarm housing in disrepair (1950): 5%
Average farmhouse value (1930): $1,762
Average outbuilding value (1930): $1,431
Average farmhouse size (1940): 7 rooms
Number of farms (1920): 4,801
Average farm size (1920): 52.6 acres
Sources of settlement: New York, Connecticut, Pennsylvania, England, and Vermont
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Jefferson

Namesake: Thomas Jefferson, U.S. president

Founding: 1803 (platting); 1807 (post office)

Population (2020): 3,226

Population (historic): 439 (1850); 869 (1870); 1,346 (1890); 1,461 (1910); 1,691 (1930)

Periods of population growth: pre-1850–1890; 1900–1930; 1940–2000; 2010s

Pre-1940 residences (estimated): 402 (27.6%)
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Outstanding Buildings

1. William Landon House (c. 1870). 3130 South Ridge Road. Ashtabula. Italianate.
2. Augustus Rose House (c. 1835). 4070 Clay Street. Austinburg. Federal.
3. *Lucius Peck House (1848). 2646 Eagleville–Jefferson Road. Austinburg.
4. Henry Austin Farm (1819). 1211 State Route 45. Austinburg. Federal.
5. French House (c. 1875). 1571 State Route 45. Austinburg. Italianate.
6. *Eliphalet Austin House (1815/1865). 1873 State Route 45. Austinburg. Italianate.
7. *Rufus Payne House (c. 1870). 1021 Tote Road. Austinburg.
8. Beckwith House (c. 1840). 7148 State Route 46. Colebrook. Greek Revival.
9. Pancoast House (c. 1840). 3242 County Line Road. Geneva. Greek Revival.
10. Hubbard House (c. 1875). 4546 North Ridge Road. Geneva. Italianate.
11. Lauren Maltbie House (c. 1830). 4322 South Ridge Road. Geneva. Federal.
12. *Shandy Hall / Robert Harper House (1815). 6333 South Ridge Road. Harpersfield.
13. Benjamin Norris Farm (c. 1840). 5853 State Route 534. Hartsgrove. Greek Revival.
14. Joseph Ashley House (c. 1820). 4001 Lake Road. Kingsville. Federal.
15. Thomas Scribner House (c. 1835). 6508 Bushnell Road. Monroe. Greek Revival.
16. Harold Rowland House (c. 1840). 4759 Crosby–Cook Road. New Lyme. Greek Revival.
17. *Fennimore Peck House (c. 1850). 5832 State Route 46. New Lyme. Greek Revival.
18. *Blakeslee Log House (1811). 441 Seven Hills Road. Plymouth.
19. Oliver Smith Farm (c. 1875). 2588 Fillingham Road. Rome. Italianate.
20. William Douglass Farm (c. 1840). 2114 US Highway 40. Rome. Greek Revival.
21. Clifton Coleman Farm (c. 1885). 8513 Creek Road. Wayne. Eastlake.
22. *Linus Jones Farm (c. 1845). 7098 Hayes Road. Wayne. Greek Revival.
23. William Kiddle Farm (c. 1875). 8974 Kiddle Road. Wayne. Gothic Revival/Eastlake.
24. Farm (1898). 9093 Stanhope–Kelloggsville Road. Williamsfield. Romanesque.
25. Daniel Gladding Farm (c. 1835). 6736 State Route 534. Windsor. Greek Revival.
26. Allen Higley House (c. 1860). 8551 State Route 534. Windsor. Italianate.
27. Elizur Loomis Farm (c. 1840). State Route 534, south of South Windsor Road. Windsor. Greek Revival.