Sumner
- County:
- Dawson County
- County Seat:
- No
- Area (mi²):
- 0.295
- State:
- Nebraska
Sumner is a village located in Dawson County, Nebraska. Sumner has a 2026 population of 246. Sumner is currently declining at a rate of -1.2% annually and its population has decreased by -2.77% since the most recent census, which recorded a population of 253 in 2020.