Formed 12 Feb 1820, 551 square miles
Parent counties: Huron and Sandusky
Evolution of county from date of formation until it assumed its final form
1 Apr 1820: Erected and attached temporarily to Sandusky until organization of Seneca
17 Feb 1824: Part of Crawford attached temporarily until organization of Crawford
1 Apr 1824: Organized
1 Apr 1826: Diminished by organization of Crawford
Federal Population schedules extant from 1820-1940. (1890 missing)
1820 Manufacturers (part of Sandusky); 1850 Agricultural; 1850 Industry; 1850 Mortality; 1860 Industry; 1860 Mortality; 1870 Agricultural; 1870 Industry; 1880 Agricultural; 1880 Industry
Adams, Big Spring, Bloom, Clinton, Eden, Hopewell, Jackson, Liberty, Loudon, Pleasant, Reed, Scipio, Seneca, Thompson, and Venice.
Archival District: Bowling Green State University, Center for Archival Collections, Jerome Library, Bowling Green Ohio.
Jana Broglin, CG, OGSF