| Code | Name | Region |
|---|---|---|
| FRSTH | Saint-thonan | 29 |
| FRSHU | Saint-thual | 35 |
| FRTZU | Saint-thurial | 35 |
| FRQSH | Saint-thuriau | 56 |
| FRZA9 | Saint-thurien | 27 |
| FRZAV | Saint-thurien | 29 |
| FRKAT | Saint-tricat | 62 |
| FRTCO | Saint-trivier-de-courtes | 1 |
| FRVVS | Saint-trivier-sur-moignans | 1 |
| FRTRJ | Saint-trojan | 33 |
| FR5TB | Saint-trojan-les-bains | 17 |
| FRUPY | Saint-sulpice-et-cameyrac | 33 |
| FRSUU | Saint-sulpice-lauriere | 87 |
| FRSP6 | Saint-sulpice-le-dunois | 23 |
| FRSU6 | Saint-sulpice-le-gueretois | 23 |
| FRFII | Saint-sulpice-les-feuilles | 87 |
| FR398 | Saint-sulpice-le-verdon | 85 |
| FRS3L | Saint-sulpice-sur-leze | 31 |
| FRRTP | Saint-sulpice-sur-risle | 61 |
| FRSYJ | Saint-sylvain-d'anjou | 49 |
| FRUVH | Saint-sylvestre | 87 |
| FRXSC | Saint-sylvestre-cappel | 59 |
| FRXZC | Saint-sylvestre-sur-lot | 47 |
| FRFPT | Saint-symphorien | 33 |
| FR2SS | Saint-symphorien | 72 |
| FRSS9 | Saint-symphorien | 79 |
| FRPHO | Saint-symphorien-de-lay | 42 |
| FRORF | Saint-symphorien-des-bruyeres | 61 |
| FRSDO | Saint-symphorien-d'ozon | 69 |
| FRAQ6 | Saint-symphorien-sous-chomerac | 7 |
| FRSSU | Saint-symphorien-sur-coise | 69 |
| FR7SB | Saint-silvain-bellegarde | 23 |
| FRX23 | Saint-silvain-sous-toulx | 23 |
| FRSSB | Saint-simeon-de-bressieux | 38 |
| FRTIM | Saint-simon | 2 |
| FROMN | Saint-simon | 15 |
| FRSBJ | Saint-simon-de-bordes | 17 |
| FRS86 | Saint-sorlin | 38 |
| FRS2B | Saint-sorlin-en-bugey | 1 |
| FR3SS | Saint-sornin | 16 |
| FRSOC | Saint-sornin | 17 |
| FRS8A | Saint-sornin-leulac | 87 |
| FRUPP | Saint-soupplets | 77 |
| FRUPI | Saint-sulpice | 60 |
| FRTPA | Saint-sulpice | 81 |
| FRSD6 | Saint-sulpice-de-cognac | 16 |
| FRSDH | Saint-sulpice-de-faleyrens | 33 |
| FRSPU | Saint-sulpice-de-mareuil | 24 |
| FRTNI | Saint-sulpice-de-pommiers | 33 |
| FRUPR | Saint-sulpice-de-royan | 17 |