
Sheldon
- County:
- Iroquois County
- County Seat:
- No
- Area (mi²):
- 0.753
- State:
- Illinois
Sheldon is a village located in Iroquois County, Illinois. Sheldon has a 2025 population of 908. Sheldon is currently declining at a rate of -1.3% annually and its population has decreased by -6.1% since the most recent census, which recorded a population of 967 in 2020.
The average household income in Sheldon is $71,956 with a poverty rate of 17.37%. The median age in Sheldon is 45.4 years: 45.5 years for males, and 45.4 years for females.