Shawneetown
- County:
- Gallatin County
- County Seat:
- Yes
- Area (mi²):
- 0.734
- State:
- Illinois
Shawneetown is a city located in Gallatin County, Illinois. Shawneetown has a 2026 population of 998. It is also the county seat of Gallatin County. Shawneetown is currently declining at a rate of -0.3% annually and its population has decreased by -5.22% since the most recent census, which recorded a population of 1,053 in 2020.