| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Saguiton | city | Province of Zamboanga del Norte | Philippines | 8.3333333 | 123.25 | 961 | 12336 |
| Saint Mary | city | Province of Zamboanga del Norte | Philippines | 7.5888889 | 122.1561111 | 137 | 8076 |
| Salog | city | Province of Zamboanga del Norte | Philippines | 8.1147222 | 122.7833333 | 226 | 11422 |
| Salucap | city | Province of Zamboanga del Norte | Philippines | 8.0625 | 122.6669444 | 314 | 26466 |
| Salug | city | Province of Zamboanga del Norte | Philippines | 8.1147222 | 122.7833333 | 226 | 11422 |
| Salum | city | Province of Zamboanga del Norte | Philippines | 8.1147222 | 122.7833333 | 226 | 11422 |
| San Nicolas | city | Province of Zamboanga del Norte | Philippines | 7.6063889 | 122.1541667 | 193 | 8076 |
| San Roque | city | Province of Zamboanga del Norte | Philippines | 7.5925 | 122.1405556 | 49 | 8076 |
| Sangkol | city | Province of Zamboanga del Norte | Philippines | 8.4786111 | 123.3255556 | 104 | 39286 |
| Santa Maria | city | Province of Zamboanga del Norte | Philippines | 7.7561111 | 122.1275 | 459 | 6429 |
| Santa Maria | city | Province of Zamboanga del Norte | Philippines | 8.4666667 | 123.4 | 150 | 49443 |
| Sauang | city | Province of Zamboanga del Norte | Philippines | 8.6963889 | 123.4958333 | 259 | 22320 |
| Sawang | city | Province of Zamboanga del Norte | Philippines | 8.6963889 | 123.4958333 | 259 | 22320 |
| Seres | city | Province of Zamboanga del Norte | Philippines | 8.3822222 | 123.3486111 | 967 | 44934 |
| Sergio Osmena Sr | city | Province of Zamboanga del Norte | Philippines | 8.1666667 | 123.5 | 800 | 50643 |
| Sergio OsmeƱa Sr | city | Province of Zamboanga del Norte | Philippines | 8.1666667 | 123.5 | 800 | 50643 |
| Siacon | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Sianib | city | Province of Zamboanga del Norte | Philippines | 8.4602778 | 123.3927778 | 150 | 49443 |
| Sianib | city | Province of Zamboanga del Norte | Philippines | 8.3666667 | 123.5 | 1354 | 16104 |
| Siare | city | Province of Zamboanga del Norte | Philippines | 8.3344444 | 122.9880556 | 282 | 18248 |
| Siari | city | Province of Zamboanga del Norte | Philippines | 8.3344444 | 122.9880556 | 282 | 18248 |
| Siay | city | Province of Zamboanga del Norte | Philippines | 7.7416667 | 122.1788889 | 137 | 9440 |
| Siayan | city | Province of Zamboanga del Norte | Philippines | 8.2969444 | 123.0444444 | 331 | 22070 |
| Siayan | city | Province of Zamboanga del Norte | Philippines | 8.2666667 | 123.1 | 219 | 10645 |
| Siayan Proper | city | Province of Zamboanga del Norte | Philippines | 8.2969444 | 123.0444444 | 331 | 22070 |
| Sibalic | city | Province of Zamboanga del Norte | Philippines | 8.045 | 122.3783333 | 180 | 1863 |
| Sibuco | city | Province of Zamboanga del Norte | Philippines | 7.2911111 | 122.0655556 | 108 | 4407 |
| Sibuko | city | Province of Zamboanga del Norte | Philippines | 7.2911111 | 122.0655556 | 108 | 4407 |
| Sibutad | city | Province of Zamboanga del Norte | Philippines | 8.5808333 | 123.4805556 | 157 | 47295 |
| Sicanan | city | Province of Zamboanga del Norte | Philippines | 7.6447222 | 122.1402778 | 324 | 7485 |
| Sicogon | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Sigayan | city | Province of Zamboanga del Norte | Philippines | 8.4322222 | 123.5333333 | 925 | 21135 |
| Sikanan | city | Province of Zamboanga del Norte | Philippines | 7.6447222 | 122.1402778 | 324 | 7485 |
| Sikitan | city | Province of Zamboanga del Norte | Philippines | 8.3502778 | 123.4661111 | 1135 | 19174 |
| Silucap | city | Province of Zamboanga del Norte | Philippines | 8.0625 | 122.6669444 | 314 | 26466 |
| Sinaman | city | Province of Zamboanga del Norte | Philippines | 8.5163889 | 123.3580556 | 65 | 47678 |
| Sinanib | city | Province of Zamboanga del Norte | Philippines | 8.3666667 | 123.5 | 1354 | 16104 |
| Sindangan | city | Province of Zamboanga del Norte | Philippines | 8.2402778 | 123.011111 | 39 | 28341 |
| Singaran | city | Province of Zamboanga del Norte | Philippines | 8.48 | 123.5191667 | 492 | 29410 |
| Siocin | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Siocon | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Siokon | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Siokun | city | Province of Zamboanga del Norte | Philippines | 7.7061111 | 122.1352778 | 78 | 7473 |
| Sipakit | city | Province of Zamboanga del Norte | Philippines | 7.6252778 | 122.2166667 | 1607 | 10619 |
| Sipawan | city | Province of Zamboanga del Norte | Philippines | 8.4852778 | 123.545 | 646 | 26733 |
| Sipulan | city | Province of Zamboanga del Norte | Philippines | 8.5227778 | 123.1844444 | 22 | 14482 |
| Siraguay | city | Province of Zamboanga del Norte | Philippines | 7.5852778 | 122.1397222 | 29 | 8076 |
| Sirawai | city | Province of Zamboanga del Norte | Philippines | 7.5852778 | 122.1397222 | 29 | 8076 |
| Siraway | city | Province of Zamboanga del Norte | Philippines | 7.5852778 | 122.1397222 | 29 | 8076 |
| Sirawi | city | Province of Zamboanga del Norte | Philippines | 7.5852778 | 122.1397222 | 29 | 8076 |
| Sonob | city | Province of Zamboanga del Norte | Philippines | 8.3280556 | 123.1558333 | 3097 | 13774 |
| Sornob | city | Province of Zamboanga del Norte | Philippines | 8.2780556 | 123.1738889 | 1555 | 9657 |