
Sidney
- County:
- Cheyenne County
- County Seat:
- Yes
- Area (mi²):
- 7.484
- State:
- Nebraska
Sidney is a city located in Cheyenne County, Nebraska. Sidney has a 2025 population of 6,456. It is also the county seat of Cheyenne County. Sidney is currently growing at a rate of 0.12% annually and its population has increased by 0.62% since the most recent census, which recorded a population of 6,416 in 2020.
The average household income in Sidney is $65,465 with a poverty rate of 12.09%. The median age in Sidney is 39.9 years: 39.6 years for males, and 40.1 years for females.