LaMoure County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 4,093. Its county seat is LaMoure.

North Dakota Highway 13 is an approximately 205-mile-long (330 km) highway that serves southeast North Dakota. For the most part, the highway is a rural two-lane road, but for the final 12 miles (19 km) east of I-29 it is a four-lane divided road. Its eastern terminus is at the Minnesota state line over the Bois de Sioux River. The western terminus is located at ND 1804 about 13 miles (21 km) west of Linton and about 50 miles (80 km) south of Bismarck.