Adams County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,200. The county seat is Hettinger. The county was created on April 17, 1907, and organized one week later. It was named for John Quincy Adams (1848–1919), a railroad official for the Milwaukee Road Railroad and distant relative of sixth U.S. President John Quincy Adams (1767–1848).

Hettinger is a city in and the county seat of Adams County, North Dakota, United States. The population was 1,074 at the 2020 census.