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

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, Pennsylvania, Connecticut, Massachusetts, and Vermont
_________________________________________________________________________________

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%)
_________________________________________________________________________________

View and filter the data. Or see a map.

_________________________________________________________________________________