Mamousia
Mamousia is a village and a community in the municipal unit of Diakopto, Achaea, Greece. It is 6 km southwest of Diakopto, on the west side of the Vouraikos gorge. The community includes the villages Derveni and Stavria.
Population
| Year | Village population | Community population |
| 1981 | - | 382 |
| 1991 | 232 | 352 |
| 2001 | 177 | 295 |
| 2011 | 214 | 355 |
| 2021 | 127 | 195 |