| Code | Name | Region |
|---|---|---|
| FRDRO | Jaillans | 26 |
| FRJLA | Jallais | 49 |
| FRJLE | Jalognes | 18 |
| FR9NE | Jalons | 51 |
| FRJES | Jambles | 71 |
| FRIA2 | Issanlas | 7 |
| FRISX | Isse | 44 |
| FRIDS | Issendolus | 46 |
| FRISH | Issenheim | 68 |
| FRIGC | Issigeac | 24 |
| FRISS | Issoire | 63 |
| FRIOU | Issou | 78 |
| FRISD | Issoudun | 36 |
| FRISI | Is-sur-tille | 21 |
| FRILM | Issy-les-moulineaux | 92 |
| FRIST | Istres | 13 |
| FRITC | Itancourt | 2 |
| FRITU | Iteuil | 86 |
| FRIT2 | Ittenheim | 67 |
| FRITW | Itterswiller | 68 |
| FRITX | Itxassou | 64 |
| FRIE3 | Iville | 27 |
| FRVY8 | Ivoy-le-pre | 18 |
| FRIME | Ivry-en-montagne | 21 |
| FRILB | Ivry-la-bataille | 27 |
| FRYOO | Irancy | 89 |
| FRISC | Ire-le-sec | 55 |
| FRIRI | Irigny | 69 |
| FRD8I | Irodouer | 35 |
| FRIRG | Irouleguy | 64 |
| FRIRZ | Irvillac | 29 |
| FRISE | Isbergues | 62 |
| FRIBU | Isigny-le-buat | 50 |
| FRISM | Isigny-sur-mer | 14 |
| FRXLI | Isle | 87 |
| FRUB8 | Isle-aubigny | 10 |
| FRISG | Isle-saint-georges | 33 |
| FRIMS | Isles-les-meldeuses | 77 |
| FRIUE | Isles-sur-suippe | 51 |
| FRISN | Isneauville | 76 |
| FRISA | Isola | 6 |
| FRIPC | Ispagnac | 48 |
| FROOP | Ispoure | 64 |
| FRQPC | Isques | 62 |
| FRIS2 | Issac | 24 |
| FRIBH | Imbsheim | 67 |
| FRIML | Imling | 57 |
| FRIPH | Imphy | 58 |
| FRICV | Incarville | 27 |
| FRIEA | Inchy-en-artois | 62 |