Dagmar is an unincorporated community in northeastern Sheridan County, Montana, United States. The town was established in 1906 by Danish immigrants to the area.Montana Untold Story Leads (pdf file)Dagmar information at Plentywood.com
Dagmar currently has a general store and a post office, which has operated since 1907.United States and Worldwide Postal History Dagmar's school closed in 1996.
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