Sioux County, Nebraska

Sioux County, Nebraska
The Sioux County Courthouse in Harrison
Location within the U.S. state of Nebraska
Coordinates: 42°28′14″N 103°43′56″W / 42.470668°N 103.73217°W / 42.470668; -103.73217
Country United States
State Nebraska
FoundedFebruary 19, 1877 (created)
October 1, 1886 (organized)
Named afterSioux people
SeatHarrison
Largest villageHarrison
Area
 • Total
2,067.365 sq mi (5,354.45 km2)
 • Land2,066.723 sq mi (5,352.79 km2)
 • Water0.642 sq mi (1.66 km2)  0.03%
Population
 (2020)
 • Total
1,135
 • Estimate 
(2024)
1,099
 • Density0.5492/sq mi (0.2120/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Area code308
Congressional district3rd
Websitesiouxcountyne.gov
• Nebraska county number 83
• Nebraska license plate prefix 80

Sioux County is a county in the U.S. state of Nebraska. As of the 2020 census, the population was 1,135, and was estimated to be 1,099 in 2024. The county seat and the largest village is Harrison.

Sioux County is included in the Scottsbluff, NE micropolitan area.

In the Nebraska license plate system, Sioux County was represented by the prefix "80" (as it had the 80th-largest number of vehicles registered in the state when the license plate system was established in 1922).