Bartelso
- County:
- Clinton County
- County Seat:
- No
- Area (mi²):
- 0.657
- State:
- Illinois
Bartelso is a village located in Clinton County, Illinois. Bartelso has a 2026 population of 639. Bartelso is currently growing at a rate of 1.11% annually and its population has increased by 1.59% since the most recent census, which recorded a population of 629 in 2020.