The canton Bar-le-Duc-1 has 13 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 55029 | Bar-le-Duc | 14 607 |
| 55302 | Longeville-en-Barrois | 1 081 |
| 55369 | Naives-Rosières | 809 |
| 55120 | Combles-en-Barrois | 770 |
| 55514 | Trémont-sur-Saulx | 554 |
| 55476 | Savonnières-devant-Bar | 430 |
| 55426 | Resson | 361 |
| 55442 | Raival | 236 |
| 55178 | Érize-Saint-Dizier | 192 |
| 55175 | Érize-la-Brûlée | 175 |
| 55479 | Seigneulles | 153 |
| 55446 | Rumont | 83 |
| 55207 | Géry | 50 |