There are 5 US Post Offices in Dickey County serving a total of 5,706 residents equating to 1,141 residents per post office. It's estimated that approximately 9,107 packages are handled across the 5 county post offices annually. Dickey County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 5,289. Its county seat is Ellendale. The legislature for the Dakota Territory authorized the formation of Dickey County in 1881, naming it for one of their members, George H. Dickey. An organizing meeting was held on August 28, 1882, at Ellendale."