Dwight is a city in Richland County, North Dakota, United States. The population was 80 at the 2020 census. Dwight was founded in 1881. …Dwight is a city in Richland County, North Dakota, United States. The population was 80 at the 2020 census. Dwight was founded in 1881. It is part of the Wahpeton, ND–MN Micropolitan Statistical Area.