Killdeer
- County:
- Dunn County
- County Seat:
- No
- Area (mi²):
- 2.151
- State:
- North Dakota
Killdeer is a city located in Dunn County, North Dakota. Killdeer has a 2026 population of 912. Killdeer is currently declining at a rate of -0.76% annually and its population has decreased by -2.77% since the most recent census, which recorded a population of 938 in 2020.