Marion County Democrats
- Contains party platform, events, directory of elected officials, caucus information, photographs and voter registration details.
- http://www.marioncountyiowademocrats.org/

National Register of Historical Places - Marion County
- Provides a listing of properties, districts, and landmarks in the county. Includes architectural style and period of significance.
- http://www.historicdistricts.com/IA/Marion/state.html

The Political Graveyard: Marion County, Iowa
- Database provides political history, cemetery locations, and brief biographies of politicians who were born, lived or died in the county.
- http://politicalgraveyard.com/geo/IA/MR.html#BORN