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

City-Data.com: Montgomery 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/Montgomery_County-IA.html

Montgomery County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19137.html

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

Montgomery County Development Corporation
- Public/private partnership devoted to the expansion and retention of existing industry and agriculture. Includes information about economic incentives, building sites, and laborshed analysis.
- http://www.mcdev.org/

Montgomery County Memorial Hospital
- Serves the communities of southwest Iowa. Provides a virtual tour, a directory of administration and department managers, services offered, an outpatient clinic schedule, an in-service calendar, and employment opportunities. Located in Red Oak, Iowa.
- http://www.mcmh.org/