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

Woodbury County Democratic Party
- Features information on local politics, voter information, events, photos and related links. Subscribe to an email list. Located in Sioux City.
- http://woodburydems.com/

The Political Graveyard: Woodbury County, Iowa
- Lists politicians who were born, lived or died in the county, as well as cemeteries and memorial sites of politicians.
- http://politicalgraveyard.com/geo/IA/WO.html