Cavalier County, North Dakota

Cavalier County
The Cavalier County Courthouse in Langdon.
Location within the U.S. state of North Dakota
North Dakota's location within the U.S.
Coordinates: 48°46′06″N 98°27′50″W / 48.768439°N 98.46379°W / 48.768439; -98.46379
Country United States
State North Dakota
FoundedJanuary 4, 1873 (created)
July 8, 1884 (organized)
Named afterFur trapper and explorer Charles Cavalier
SeatLangdon
Largest cityLangdon
Area
  Total
1,509.835 sq mi (3,910.45 km2)
  Land1,489.125 sq mi (3,856.82 km2)
  Water20.710 sq mi (53.64 km2)  1.37%
Population
 (2020)
  Total
3,704
  Estimate 
(2024)
3,567
  Density2.395/sq mi (0.925/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Area code701
Congressional districtAt-large
Websitecavaliercounty.us

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, and was estimated to be 3,567 in 2024. The county seat and the largest city is Langdon.

There is also a city named Cavalier but it is not located in Cavalier County. The City of Cavalier is the county seat of Pembina County, west of Cavalier County.