Olmsted
- County:
- Pulaski County
- County Seat:
- No
- Area (mi²):
- 3.365
- State:
- Illinois
Olmsted is a village located in Pulaski County, Illinois. Olmsted has a 2026 population of 267. Olmsted is currently declining at a rate of -1.84% annually and its population has decreased by -5.99% since the most recent census, which recorded a population of 284 in 2020.