| Nome | Tipo | Popolazione 2021 | Fonte |
|---|---|---|---|
| Ostuni | frazione | 21.613 | istat bt2021 |
| Santa Caterina | localita | 531 | istat bt2021 |
| Villanova | frazione | 376 | osm |
| Zona Sisri | localita | 216 | istat bt2021 |
| Rosa Marina | frazione | 187 | istat bt2021 |
| Diana Marina | frazione | 179 | osm |
| Monticelli | frazione | 51 | osm |
| Aia grande-Montalbano | frazione | 45 | istat bt2021 |
| Costa Merlata | frazione | 44 | istat bt2021 |
| Pascarosa | frazione | 15 | istat bt2021 |
| San Salvatore | frazione | 14 | istat bt2021 |
| Sorbola | frazione | 8 | istat bt2021 |
| Certosa | frazione | 7 | istat bt2021 |
| Chiobbica | frazione | 7 | istat bt2021 |
| Fogliarella | frazione | 5 | istat bt2021 |
| Soluco | frazione | 4 | istat bt2021 |
| Martellotti | frazione | 3 | istat bt2021 |
| Portarino | frazione | 0 | istat bt2021 |