Voltaire
- County:
- McHenry County
- County Seat:
- No
- Area (mi²):
- 0.486
- State:
- North Dakota
Voltaire is a city located in McHenry County, North Dakota. Voltaire has a 2025 population of 43 . Voltaire is currently declining at a rate of 0% annually and its population has decreased by -4.44% since the most recent census, which recorded a population of 45 in 2020.
The median age in Voltaire is 53.8 years: 64.1 years for males, and 53.3 years for females. For every 100 females there are 145.0 males.