| Type: | municipality |
| Karacasu | |
| Coordinates: | 40.6889°N 31.625°W |
| Province: | Bolu |
| District: | Bolu |
| Elevation M: | 730 |
| Population Total: | 2197 |
| Population As Of: | 2021 |
| Postal Code: | 14020 |
| Area Code: | 0374 |
Karacasu is a town (belde) in the Bolu District, Bolu Province, Turkey.[1] Its population is 2,197 (2021).[2] It is situated 7km (04miles) far from Bolu to the north of Köroğlu Mountains. The town's economy depends on thermal springs.