Preble County Extension Office - Branch office of Ohio State University, it combines the needs of local citizens and communities, with new research and technical information. Preble County Engineer - Provides road construction updates, current event and department information. The Political Graveyard: Preble County, Ohio - Site contains information on the political history of Preble County, cemeteries and memorial sites in the county. Preble County Board of Elections - Posts live election results. Also provides the election calendar and information about the board, issues, candidates, voter registration and pollworker employment. County Map - Map of Preble County. Profile for Preble County - Information on the political infrastructure of the county.