Hardin County Connections
- Includes county profile and services, educational and government websites, parks and recreation, health facilities, and places to visit.
- http://www.oplin.org/controller.php?l=category&Id=63-16-146

Hardin County Economic Development Council
- Promotes community improvement and economic growth. Includes list of businesses, calendar, and education and training opportunities.
- http://edc.hardinohio.org/edchome.htm

Hardin County Chamber of Commerce
- Includes information about the community, upcoming events and list of members.
- http://chamber.hardinohio.org/

Profile for Hardin County
- Information on the political infrastructure of the county.
- http://www.capitolimpact.com/gw/cntydetail.asp?state=oh&stfips=39&stname=Ohio&fips=39065

Hardin County Agricultural Extension Office
- Branch office of Ohio State University, it combines the needs of local citizens and communities, with new research and technical information.
- http://hardin.osu.edu/

Hardin County, Ohio - U.S. Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/39/39065.html

AdaNet
- Website offering history and community links.
- http://www2.wcoil.com/~adanet/

County Map
- Map of Hardin County.
- http://www.dot.state.oh.us/map1/ohiomap/images/county/hardin.gif

The Political Graveyard: Hardin County, Ohio
- Site contains information on the political history of Hardin County, cemeteries and memorial sites in the county.
- http://politicalgraveyard.com/geo/OH/HR.html