Madison County Historical Society
- Dedicated to collect, preserve, and display memorabilia relating to the history of the county. Includes details about its museum exhibits and photographs, and activities.
- http://madisoncountyhistory.org/

Madison County Genealogical Society
- Contains information about meetings and membership, cemetery locations and a list of publications for sale. Located in Norfolk.
- http://www.rootsweb.com/~nemcgs/

The Political Graveyard: Madison County, Nebraska
- Database provides brief biographies of politicians who were born, lived or died in the county, cemetery location maps, and political history.
- http://politicalgraveyard.com/geo/NE/MA.html

Madison County - NEGenWeb
- Provides a genealogy and history database, photographs, maps and lookup assistance.
- http://www.rootsweb.com/~nemadiso/

Madison County
- Official site. Pages on Sheriff's and Joint Planning departments.
- http://www.co.madison.ne.us/