Waubun is a city in Mahnomen County, Minnesota, United States. The population was 409 at the 2020 census. U.S. Route 59 and Minnesot…Waubun is a city in Mahnomen County, Minnesota, United States. The population was 409 at the 2020 census. U.S. Route 59 and Minnesota State Highway 113 are two of the main routes in the community. The city was incorporated as a village on December 18, 1907. When the Soo Line was built through the county in 1903–4, the general manager, Pennington, and his chief engineer, Thomas Green, named the stations as they moved the line north; all towns on the reservation had to have Native American names. The community post office was established in 1905 as Bement and changed to Waubun in 1906. The name "Waubun" comes from the Ojibwe word for "the east", "the morning", "the twilight of dawn", and "dawn of day".