This department has 325 communes.
| Code | Name | Population |
|---|---|---|
| 09225 | Pamiers | 16 473 |
| 09122 | Foix | 9 934 |
| 09261 | Saint-Girons | 6 008 |
| 09160 | Lavelanet | 5 987 |
| 09282 | Saverdun | 4 808 |
This department has 14 cantons.
| Code | Name | Central office |
|---|---|---|
| 0901 | Haute-Ariège | Ax-les-Thermes |
| 0902 | Arize-Lèze | Lézat-sur-Lèze |
| 0903 | Couserans Est | La Bastide-de-Sérou |
| 0904 | Couserans Ouest | Saint-Girons |
| 0905 | Foix | Foix |
This department has 3 departmental arrondissements.
| Code | Name | Administrative seat |
|---|---|---|
| 091 | Foix | Foix |
| 092 | Pamiers | Pamiers |
| 093 | Saint-Girons | Saint-Girons |