There are 3 US Post Offices in Hettinger County serving a total of 2,673 residents equating to 891 residents per post office. It's estimated that approximately 4,266 packages are handled across the 3 county post offices annually. Hettinger County (/\u02c8h\u025bt\u026a\u014b\u0261\u0259r/ HET-ing-g\u0259r) is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 2,477. Its county seat is Mott. The county was created in 1883, but it was not fully organized until 1907. The city of Hettinger, North Dakota, is in nearby Adams County."