Niobrara County, Wyoming

county in Wyoming, United States

Niobrara County is a county in the U.S. state of Wyoming. As of the 2010 United States Census, 2,484 people lived there.[1] Its county seat is Lusk.[2] Its eastern boundary abuts the west lines of the states of Nebraska and South Dakota.

Niobrara County
Stagecoach Museum in Lusk.
Stagecoach Museum in Lusk.
Map of Wyoming highlighting Niobrara County
Location within the U.S. state of Wyoming
Map of the United States highlighting 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 forNiobrara River
Largest townLusk
 • Total2,628 sq mi (6,810 km2)
 • Land2,626 sq mi (6,800 km2)
 • Water1.9 sq mi (5 km2)  0.07%%
 • Estimate 
 • Density0.9/sq mi (0.3/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Niobrara County (WY) SR85


Niobrara County was created on February 21, 1911.[3]

The county was named for the Niobrara River, which rises near Lusk.[4]


According to the US Census Bureau, the county has a total area of 2,628 square miles (6,810 km2), of which 2,626 square miles (6,800 km2) is land and 1.9 square miles (4.9 km2) (0.07%) is water.[5]

Bordering countiesEdit



Census-designated placeEdit

Unincorporated communitiesEdit


  1. "State & County QuickFacts". US Census Bureau. Archived from the original on June 6, 2011. Retrieved January 25, 2014.
  2. "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. Long, John H., ed. (2004). "Wyoming: Individual County Chronologies". Wyoming Atlas of Historical County Boundaries. The Newberry Library. Retrieved August 19, 2015.
  4. Urbanek, Mae (1988). Wyoming Place Names. Missoula MT: Mountain Press Pub. Co. ISBN 0-87842-204-8.
  5. "2010 Census Gazetteer Files". US Census Bureau. August 22, 2012. Retrieved August 18, 2015.

Other websitesEdit