This department has 431 communes.
| Code | Name | Population |
|---|---|---|
| 10387 | Troyes | 62 088 |
| 10323 | Romilly-sur-Seine | 14 959 |
| 10333 | Saint-André-les-Vergers | 12 806 |
| 10081 | La Chapelle-Saint-Luc | 12 648 |
| 10362 | Sainte-Savine | 10 289 |
This department has 18 cantons.
| Code | Name | Central office |
|---|---|---|
| 1001 | Aix-Villemaur-Pâlis | Aix-Villemaur-Pâlis |
| 1002 | Arcis-sur-Aube | Arcis-sur-Aube |
| 1003 | Bar-sur-Aube | Bar-sur-Aube |
| 1004 | Bar-sur-Seine | Bar-sur-Seine |
| 1005 | Brienne-le-Château | Brienne-le-Château |
This department has 3 departmental arrondissements.
| Code | Name | Administrative seat |
|---|---|---|
| 101 | Bar-sur-Aube | Bar-sur-Aube |
| 102 | Nogent-sur-Seine | Nogent-sur-Seine |
| 103 | Troyes | Troyes |