Lebanon
- County:
- Boone County
- County Seat:
- Yes
- Area (mi²):
- 21.361
- State:
- Indiana
Lebanon is a city located in Boone County, Indiana. Lebanon has a 2026 population of 17,608. It is also the county seat of Boone County. Lebanon is currently growing at a rate of 1.91% annually and its population has increased by 5.34% since the most recent census, which recorded a population of 16,716 in 2020.