Duncan
- County:
- Platte County
- County Seat:
- No
- Area (mi²):
- 0.468
- State:
- Nebraska
Duncan is a village located in Platte County, Nebraska. Duncan has a 2026 population of 388. Duncan is currently growing at a rate of 1.04% annually and its population has increased by 1.57% since the most recent census, which recorded a population of 382 in 2020.