Handbook of Texas Online
- Current and historical information about Hardin County.
- http://www.tsha.utexas.edu/handbook/online/articles/HH/hch6.html

The Political Graveyard: Hardin County, Tex.
- Provides population, land area, and county information.
- http://www.politicalgraveyard.com/geo/TX/HB.html

Hardin County QuickFacts - US Census Bureau
- Population, demographic, and housing information from census. Link to Tiger map of the county.
- http://quickfacts.census.gov/qfd/states/48/48199.html

Amphibians and Reptiles in Hardin County
- Texas Cooperative Wildlife Collection list of species found in the county.
- http://wfscnet.tamu.edu/tcwc/checklist/HARDI100.HTM

Hardin County Taxroll Search
- Interactive site allows searches of property tax records.
- http://www.taxnetusa.com/hardin/

Wildwood Resort City
- Residential resort community located in Hardin county, near the Big Thicket National Preserve in the Piney Woods of Texas, northwest of Beaumont and two hours from Houston.
- http://www.wildwoodresortcity.com/