Beulah is a city in Mercer County, North Dakota, United States. The population was 3,058 at the 2020 census, and was estimated at 3,047 in 2024, making it the 17th-most populous city in North Dakota. Beulah is home to the Dakota Gasification Company. It is near the largest lignite mine in the United States, owned by North American Coal Corporation.

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