Marion-Grant County Chamber of Commerce
- Includes community links, chamber membership information and newsletter, business directory, and community events calendar.
- http://www.marionchamber.org/

Economic Growth Council
- Dedicated to encouraging investment in the area. County profile including demographic and educational workforce information, list of available sites.
- http://www.grantcoindevelopment.com/

Grantcounty.net
- Official local government portal. Directory of local government agencies, institutions, and business, as well as local attractions and Frequently Asked Questions.
- http://www.grantcounty.net/

Madison-Grant United School Corporation
- Consolidated district serving much of the county. Administrative information, news, calendar, pages of individual schools.
- http://www.mgusc.k12.in.us/

Marion-Grant County Convention and Visitors Bureau
- Visitors' guide to the area.
- http://www.jamesdeancountry.com/

The Political Graveyard
- Information on the political history, cemeteries and memorial sites in the county.
- http://politicalgraveyard.com/geo/IN/GR.html