I have been unable to find a list of cooperatives and their operating branches. Does such a list exist?

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Question: 

I am working on a research project of agriculture cooperatives and their locations across the United States. I have found several sources that list the coops by name and give the main office corporate address, but I have been unable to find a list of cooperative and their operating branches. Does such a list exist?

Answer: 

To my knowledge, a publically-accessible national listing of all the agricultural cooperatives and their branches does not exist. However, many states have cooperative associations or cooperative development centers that likely maintain a list of the agricultural cooperatives and branches in their state. For example, the Iowa Institute for Cooperatives has a map and listing of all the agricultural cooperatives and their branches in Iowa. It is found at: iowainstitute.coop/about-coops/map-of-iowa-coops/. For a list of the state councils, visit the National Council of Farmer Cooperatives website: www.ncfc.org/member-directory/state-councils/.