Ohio County was a part of Dearborn County prior to 1844. See Dearborn County Directories for those records.

City and County Directories

• Ohio County – 1859 Directory
• Rising Sun – 1859 Directory
• Ohio County – 1883 Atlas Patrons

State and Regional Directories

Directory	Ohio County	Rising Sun
1846 Western & Southern Business Directory	Index	N/A
1849 Indiana Gazetteer	Index	N/A
1858 Indiana Gazetteer and Business Directory	Index	N/A
1860 Indiana Gazetteer and Business Directory	Index	N/A
1861 Ohio River Gazetteer	Index	N/A
1862 Indiana Gazetteer and Business Directory	Index	N/A
1866 Indiana Gazetteer and Shippers’ Guide	Index	N/A
1868 Indiana Business Directory and Shippers’ Guide	Index	N/A
1876 Indiana Atlas Business Directory	Directory Patrons	N/A
1878 Farmers	Index	N/A
1880 Indiana Gazetteer and Business Directory	Index	N/A
1882 Indiana Gazetteer and Business Directory	Index	N/A
1884 Indiana Gazetteer and Business Directory	Index	N/A
1887 Indiana Gazetteer and Business Directory	Index	Index
1890 Indiana Gazetteer and Business Directory	Index	Index
1892 Indiana Gazetteer and Business Directory	Index	Index
1895 Indiana Gazetteer and Business Directory	Index	Index
1916 Indiana Gazetteer and Business Directory	Index	N/A