The canton Chartres-1 has 12 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 28085 | Chartres | 38 324 |
| 28070 | Champhol | 3 643 |
| 28358 | Saint-Prest | 2 115 |
| 28201 | Jouy | 1 988 |
| 28173 | Gasville-Oisème | 1 467 |
| 28104 | Coltainville | 915 |
| 28034 | Berchères-Saint-Germain | 905 |
| 28102 | Clévilliers | 765 |
| 28301 | Poisvilliers | 445 |
| 28068 | Challet | 429 |
| 28060 | Briconville | 271 |
| 28163 | Fresnay-le-Gilmert | 217 |