There are 6 US Post Offices in Ramsey County serving a total of 10,963 residents equating to 1,827 residents per post office. It's estimated that approximately 17,498 packages are handled across the 6 county post offices annually. Ramsey County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 11,451. Its county seat is Devils Lake. The county was created by the 1872-73 territorial legislature and organized on January 25, 1883. It was named for Alexander Ramsey, a U.S. Senator from Minnesota."