Wikipedia: Madison County, Iowa
- Encyclopedia article presents geography, demographics, and links to covered bridges and localities. With photograph and maps.
- http://en.wikipedia.org/wiki/Madison_County,_Iowa

Madison County Health Care Systems
- Provides a continuum of care to residents living in and around the county. Includes information about clinics and hospitals, team profiles, calendar of events, patient pre-registration application and employment opportunities. Located in Winterset.
- http://www.madisonhealth.com/

City-Data.com: Madison 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/Madison_County-IA.html

Madison County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19121.html

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

Madison County Parks.
- Provides a list of parks and services, a road map, information about activities and FAQs.
- http://www.madisoncountyparks.org/

Madison County, Iowa
- County government site. Includes directory of services and departments, real estate and tax inquiry forms, hours of operation, Board of Supervisors agenda and links.
- http://www.madisoncoia.us

Madison County Chamber of Commerce
- Provides a brief overview, details of the county's covered bridges, a business directory, events, and tourist information. Download a map.
- http://www.madisoncounty.com/