Ohio County History

Ohio County, Indiana Timeline

  • 1 May 1844 – Ohio County formed from Dearborn County.
  • Jan 1845 – Ohio County boundaries changed to present boundaries.
  • 1845-1849 – Ohio County continued to petition for more territory in the state legislature while Dearborn County tried to get territory back from Ohio County.


Billingsley, E. W. History of Rising Sun. Manuscript at Ohio County Historical Society and microfilmed by Family History Library.

Broadhead, Juanita. Index of names of persons and of firms. Indianapolis: Indiana Historical Society, 1979.

Dorrell, D. R., Mostly about Ohio Co. Folks, 1989.

Dorrell, D. R. Ohio County Families, 1900’s. [S.I.: D.R. Dorrell], 1993.

History of Dearborn, Ohio and Switzerland Counties. Chicago: F. E. Weakley and Co., 1885.
Volume 2 (includes the biographies) online at Internet Archive.

Morris, B. F. Historical Sketch of Rising Sun, Indiana, and the Presbyterian Church…1856. Cincinnati: Moore, Wilstach, Keys & Co., 1858.

Works, Andrew W., “Recollections of the Hill Country”. (Series of articles originally published in the Ohio County News and Rising Sun Recorder, 1908-1909, and reprinted 1979).

Online Resources

Atlas of Historical County Boundaries from The Newberry Library

Dearborn County History