Wikipedia: Clarke County, Iowa
- Encyclopedia article features geography, demographics and links to cities and towns. Includes maps.
- http://en.wikipedia.org/wiki/Clarke_County,_Iowa

City-Data.com: Clarke 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/Clarke_County-IA.html

Clarke County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19039.html

Clarke County Hospital
- Providing diagnostic outpatient, emergency, medical and surgical services. Includes guide for visitors, details of services, directory of outpatient clinics and specialists, information about the Auxiliary, and community resources. Located in Osceola.
- http://www.clarkehosp.org/

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

Clarke Electric Cooperative, Inc.
- Not-for-profit electric utility providing service to rural customers in the south central area of the state. Includes product and service details, account information and safety tips. Located in Osceola.
- http://www.cecnet.net/

Clarke County Iowa
- Features history, information about services, departments, FAQs, photographs and event calendar.
- http://www.clarkecountyiowa.org/

Clarke County Fair
- Annual event in July. Includes history, events, board directory and photographs.
- http://www.clarkecountyfair.com/

Clarke County Development Corporation
- Dedicated to strengthening the economic development of southern Iowa through the growth of local business and industry, addition of new industry and enhancing th area's quality of life. Includes a list of available business sites.
- http://www.clarkecountyiowa.com/