| City |
Code |
| Saint Helena |
290 |
| Saint Kitts and Nevis |
1 |
| Saint Lucia |
1 |
| Saint Pierre and Miquelon |
508 |
| Saint Vincent and the Grenadines |
1 |
| Samoa (Independent State of) |
685 |
| San Marino (Republic of) |
378 |
| Sao Tome and Principe (Democratic Republic of) |
239 |
| Saudi Arabia (Kingdom of) |
966 |
| Senegal (Republic of) |
221 |
| Seychelles (Republic of) |
248 |
| Sierra Leone |
232 |
| Singapore (Republic of) |
65 |
| Slovak Republic |
421 |
| Slovenia (Republic of) |
386 |
| Solomon Islands |
677 |
| Somali Democratic Republic |
252 |
| South Africa (Republic of) |
27 |
| Spain |
34 |
| Sri Lanka (Democratic Socialist Republic of) |
94 |
| Sudan (Republic of the) |
249 |
| Suriname (Republic of) |
597 |
| Swaziland (Kingdom of) |
268 |
| Sweden |
46 |
| Switzerland (Confederation of) |
41 |
| Syrian Arab Republic |
963 |
