Fairmount is a city in Richland County, North Dakota in the United States. The population was 367 at the 2010 census. Fairmount was founded in 1884. It is part of the Wahpeton, ND–MN Micropolitan Statistical Area.
Fairmount is located at 46°3′16″N 96°36′6″W / 46.05444°N 96.60167°W / 46.05444; -96.60167 (46.054393, -96.601642) and sits in southeastern North Dakota on North Dakota Highway 11. It is about four miles west of the junction of Minnesota Highway 55 and US Route 75. It is six miles west of Tenney, Minnesota, 63 miles south of Fargo, North Dakota, and 176 miles northwest of Minneapolis, Minnesota. The village is also 15 miles East of Hankinson, North Dakota and 15 miles south of Wahpeton, North Dakota.
According to the United States Census Bureau, the village has a total area of 0.3 square miles (0.9 km²), all of it land.