Ohio County, Indiana was formed on 1 May 1844 from Dearborn County.
Ohio County Genealogical Resources:
- Census Records
- Vital Records
- Cemetery Records
- Probate Records
- Court and Naturalization Records
- Land Records, Maps, and Gazetteers
- Military Records
- Church Records
- Other Records
WPA Inventory of Ohio County records completed in 1936. Records may have been moved or destroyed in the intervening decades.