Sargent County is a county in the U.S. state of North Dakota. Its county seat is Forman, and its most populous city is Gwinner. The county is named in honor of Homer E. Sargent, a 19th-century general manager of the Northern Pacific Railroad Company. The county spans an agricultural region between the James River and Red River valleys in southeastern North Dakota dotted with various sloughs, lakes, and hills.

Ransom County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 5,703. Its county seat is Lisbon.