McHenry
- County:
- Foster County
- County Seat:
- No
- Area (mi²):
- 0.246
- State:
- North Dakota
McHenry is a city located in Foster County, North Dakota. McHenry has a 2026 population of 63. McHenry 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 63 in 2020.
The median household income in McHenry is $2,499 with a poverty rate of 37.88%. The median age in McHenry is 49.5 years: 57.3 years for males, and 17.9 years for females. For every 100 females there are 112.9 males.