Niobrara County, Wyoming

Niobrara County
Stagecoach Museum in Lusk
Location within the U.S. state of Wyoming
Wyoming's location within the U.S.
Coordinates: 43°03′N 104°28′W / 43.05°N 104.47°W / 43.05; -104.47
Country United States
State Wyoming
FoundedFebruary 21, 1911 (authorized)
1913 (organized)
Named afterNiobrara River
SeatLusk
Largest townLusk
Area
  Total
2,628 sq mi (6,810 km2)
  Land2,626 sq mi (6,800 km2)
  Water1.9 sq mi (5 km2)  0.07%
Population
 (2020)
  Total
2,467
  Estimate 
(2024)
2,301
  Density0.94/sq mi (0.36/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional districtAt-large

Niobrara County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 2,467, making it the least populous county in Wyoming. Its county seat is Lusk. Its eastern boundary abuts the west lines of the states of Nebraska and South Dakota.