Shiloh
- County:
- St. Clair County
- County Seat:
- No
- Area (mi²):
- 12.656
- State:
- Illinois
Shiloh is a village located in St. Clair County, Illinois. Shiloh has a 2026 population of 14,754. Shiloh is currently declining at a rate of -0.32% annually but its population has increased by 4.35% since the most recent census, which recorded a population of 14,139 in 2020.