Cavalier County is a county in the U.S. state of North Dakota. It is south of the Canada–US border with Manitoba. As of the 2020 census, the population was 3,704. Its county seat is Langdon. The city of Cavalier is the county seat of neighboring Pembina County.
Country: United States
State: North Dakota
Founded: 1873 (created) · 1884 (organized)
Named for: Fur trapper and explorer Charles Cavalier
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