Donnellson
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 0.371
- State:
- Illinois
Donnellson is a village located in Montgomery County, Illinois. Donnellson has a 2026 population of 150. Donnellson is currently declining at a rate of -1.32% annually and its population has decreased by -3.23% since the most recent census, which recorded a population of 155 in 2020.
The median household income in Donnellson is $45,875 with a poverty rate of 41.86%. The median age in Donnellson is 51.5 years: 38.9 years for males, and 60.5 years for females. For every 100 females there are 158.0 males.