Wikipedia: Worth County, Iowa
- Encyclopedia article covers geography, demographics and links to localities. With maps.
- http://en.wikipedia.org/wiki/Worth_County,_Iowa

City-Data.com: Worth 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/Worth_County-IA.html

Worth County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19195.html

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

Worth County Fair
- Held annually in June. Covers schedule of events, information about exhibits and livestock shows, directory of officers and 4-H leaders, and photographs. Located in Northwood.
- http://www.worthcountyfair.com/

Worth County, Iowa
- Provides descriptions of departments and services, staff photos and office hours.
- http://www.worthcounty.org/