Wikipedia: Winnebago County, Iowa
- Encyclopedia article features geography, demographics and links to localities. Includes maps.
- http://en.wikipedia.org/wiki/Winnebago_County,_Iowa

City-Data.com: Winnebago County, Iowa
- Profiles population demographics, jobs, housing, agriculture and crime statistics. Contains a list of recreational areas, churches, cemeteries, post offices, charts, graphs and maps.
- http://www.city-data.com/county/Winnebago_County-IA.html

Winnebago County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19189.html

Winnebago County Conservation Board
- Aims to provide outdoor recreational opportunities for everyone and to protect and conserve the area's natural resources. Includes a list of facilities and services, and a staff directory.
- http://www.winnebagoccb.com/

Iowa State University Extension - Winnebago County
- Offers agricultural, business, family and 4-H programs and resources. Includes staff directory, news, events, hours and directions. Located in Thompson.
- http://www.extension.iastate.edu/winnebago/