City-Data.com: Calumet, Iowa
- Profiles housing, population demographics, jobs, weather and climate tables. Contains a list of area hospitals, schools, airports, radio and TV broadcast stations, charts and maps.
- http://www.city-data.com/city/Calumet-Iowa.html

Wikipedia: Calumet, Iowa
- Encyclopedia article covers geography and demographics of this community in O'Brien County.
- http://en.wikipedia.org/wiki/Calumet,_Iowa

Calumet
- Features an overview of the community with information about businesses, schools, churches, healthcare, recreation and tourism.
- http://www.obriencounty.com/Calumet/calumet.htm