| Code | Name | Region |
|---|---|---|
| FROYG | Courgenay | 89 |
| FRY3Y | Courgent | 78 |
| FRCGU | Courgis | 89 |
| FRRUX | Courlaoux | 39 |
| FR222 | Coulmier-le-sec | 21 |
| FRCU2 | Coulmiers | 45 |
| FRCUL | Coulogne | 62 |
| FRCBR | Coulombiers | 86 |
| FRUMS | Coulombs | 28 |
| FRULV | Coulombs-en-valois | 77 |
| FRGZM | Coulommes-la-montagne | 51 |
| FRCLI | Coulommiers | 77 |
| FRC4T | Coulommiers-la-tour | 41 |
| FROGZ | Coulonges-sur-l'autize | 79 |
| FR3GH | Coulonges-sur-sarthe | 61 |
| FRC7H | Coulounieix-chamiers | 24 |
| FRQQI | Couqueques | 33 |
| FRBP2 | Courbepine | 27 |
| FRCRB | Courbevoie | 92 |
| FRURB | Courbillac | 16 |
| FRNZB | Courbouzon | |
| FRUBZ | Courbouzon | 39 |
| FRRBZ | Courbouzon | 41 |
| FR3CC | Courcais | 3 |
| FRTBU | Coudray-rabut | 14 |
| FRXD9 | Coudrecieux | 72 |
| FRUDU | Coudun | 60 |
| FRCUN | Coueron | 44 |
| FRCOW | Couesmes | 37 |
| FRUF4 | Couffoulens | 11 |
| FROUF | Couffy | 19 |
| FROU3 | Couffy | 41 |
| FRCFK | Coufouleux | 81 |
| FRUHE | Couhe | 86 |
| FRCYP | Couilly-pont-aux-dames | 77 |
| FRCIZ | Couiza | 11 |
| FROLD | Couladere | 31 |
| FRRUH | Coulaines | 72 |
| FRICI | Coulanges-la-vineuse | 89 |
| FRCUV | Coulanges-les-nevers | 58 |
| FRXCG | Coulans-sur-gee | 72 |
| FRC6U | Couleuvre | 3 |
| FRULO | Coullons | 45 |
| FRCO5 | Coulmer | 61 |
| FR5CY | Cossaye | 58 |
| FRCSI | Cosse-le-vivien | 53 |
| FRCO3 | Cotignac | 83 |
| FRC9C | Cottenchy | 80 |
| FRUBT | Coubert | 77 |
| FRGB9 | Coubeyrac | 33 |