Champaign County Extension Office - Branch office of Ohio State University, it combines the needs of local citizens and communities, with new research and technical information. The Political Graveyard: Champaign County, Ohio - Site contains information on the political history of Champaign County, cemeteries and memorial sites in the county. Champaign County - Providing history, government, and community information. Champaign County Library - Includes information about services, programs, calendar and genealogy. County Map - Ohio Department of Transportation map of Champaign County. Profile for Champaign County - Information on the political infrastructure of the county.