Calio
- County:
- Cavalier County
- County Seat:
- No
- Area (mi²):
- 8.174
- State:
- North Dakota
Calio is a city located in Cavalier County, North Dakota. Calio has a 2026 population of 6. Calio is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 6 in 2020.
The median household income in Calio is $164,000 with a poverty rate of 0%. The median age in Calio is 84.3 years: 85.2 years for males, and 73.5 years for females. For every 100 females there are 133.3 males.