Clermont County, Location

Clermont County

Formed 6 Dec 1800, 458 square miles
Parent county: Hamilton

Evolution of county from date of formation until it assumed its final form
6 Dec 1800: Erected and organized
1 Mar 1805: Diminished by formation of Highland
1 Mar 1818: Diminished by formation of Brown

Clermont County's first courthouse in 1800 was at Williamsburg(h), originally known as Lytlestown. In 1823 a decision was made to move the county seat to New Richmond. There was a dispute over the quality of the buildings. Thus, in 1824, the county seat was moved to Batavia, where it remains. (Thanks to Amy Zimmer Schneider for this updated information!) 

Federal Population schedules extant from 1820-1940. (1890 missing) 

Non-population schedules:
1820 Manufacturers; 1850 Agricultural; 1850 Industry; 1860 Mortality; 1870 Agricultural; 1870 Industry; 1880 Agricultural; 1880 Mortality

Townships:
Batavia, Franklin, Goshen, Jackson, Miami, Monroe, Ohio, Pierce, Stonelick, Tate, Union, Washington, Wayne, and Williamsburg.
Archival District: University of Cincinnati, Archives & Rare Books, Blegen Library