| Nome | Tipo | Popolazione 2021 | Fonte |
|---|---|---|---|
| Santadi | frazione | 1.890 | istat bt2021 |
| Terresoli | frazione | 336 | istat bt2021 |
| Is Collus | frazione | 101 | istat bt2021 |
| Barrancu Mannu | frazione | 88 | istat bt2021 |
| Is Pinnas | frazione | 70 | istat bt2021 |
| Is Sabas | frazione | 48 | istat bt2021 |
| Is Scattas | frazione | 29 | istat bt2021 |
| Is Sinzus | frazione | 26 | istat bt2021 |
| Barrua Susu | frazione | 21 | istat bt2021 |
| Is Pirosus | frazione | 19 | istat bt2021 |
| Su Benatzu | frazione | 18 | istat bt2021 |
| Is Langius | frazione | 17 | istat bt2021 |
| Is Piroddis | frazione | 17 | istat bt2021 |
| Is Canis | frazione | 14 | istat bt2021 |
| Is Lois de Basciu | frazione | 13 | istat bt2021 |
| Is Pisanus | frazione | 13 | istat bt2021 |
| Morimenta de Susu | frazione | 12 | istat bt2021 |
| Is Cosas | frazione | 11 | istat bt2021 |
| Morimenta de Basciu | frazione | 8 | istat bt2021 |
| Is Scanus | frazione | 6 | istat bt2021 |
| Case del Frate | frazione | 0 | istat bt2021 |
| Crabì | frazione | 0 | istat bt2021 |