Census Records

Special Collections and Archives has Federal Census records for 1820-1880 and 1900-1930 for the 11 counties in the department's service area: Auglaize, Champaign, Clark, Darke, Greene, Logan, Mercer, Miami, Montgomery, Preble, and Shelby.

Indexes to Federal Census Records for the state of Ohio from 1820-1880 and 1900-1920 are also available to use in the reading room. The Federal Census Records for 1810 and 1890 were destroyed by fire.

Nationwide census data is accessible through FamilySearch.