Hazen
- County:
- Mercer County
- County Seat:
- No
- Area (mi²):
- 1.408
- State:
- North Dakota
Hazen is a city located in Mercer County, North Dakota. Hazen has a 2026 population of 2,288. Hazen is currently growing at a rate of 0.44% annually and its population has increased by 0.44% since the most recent census, which recorded a population of 2,278 in 2020.