There are 2 US Post Offices in Adams County serving a total of 2,123 residents equating to 1,062 residents per post office. It's estimated that approximately 3,389 packages are handled across the 2 county post offices annually. Adams County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 2,343. The county seat is Hettinger. The county was created on April 17, 1907 and organized one week later. It was named after John Quincy Adams (1848 \u2013 1919), a railroad official for the Milwaukee Road Railroad and distant relative of U.S. President John Quincy Adams (1767 \u2013 1848)."