Warren County, Location

Warren County

Formed 24 Mar 1803, 408 square miles
Parent county: Hamilton

Evolution of county from date of formation until it assumed its final form
1 May 1803: Erected and organized
1 Mar 1810: Diminished by formation of Clinton
1 Mar 1815: Part of Butler attached. Part attached to Clinton

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

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

Townships:
Clear Creek, Deerfield, Franklin, Hamilton, Harlan, Massie, Salem, Turtle Creek, Union, Washington, and Wayne.
Archival District: University of Cincinnati, Archives & Rare Books, Blegen Library
Warren County death records: http://www.co.warren.oh.us/genealogy/deathmain.htm