| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Gabao | city | Province of Ilocos Sur | Philippines | 17.2666667 | 120.4166667 | 52 | 31043 |
| Gabor Norte | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.45 | 62 | 25396 |
| Gabor Sur | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.45 | 62 | 25396 |
| Galimuyad | city | Province of Ilocos Sur | Philippines | 17.1844444 | 120.4719444 | 82 | 49346 |
| Galimuyod | city | Province of Ilocos Sur | Philippines | 17.1844444 | 120.4719444 | 82 | 49346 |
| Gilong | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.5166667 | 360 | 32179 |
| Gregorio del Pilar | city | Province of Ilocos Sur | Philippines | 17.1302778 | 120.6119444 | 1148 | 7653 |
| Guan | city | Province of Ilocos Sur | Philippines | 16.9461111 | 120.4652778 | 275 | 35683 |
| Guardia | city | Province of Ilocos Sur | Philippines | 17.25 | 120.4833333 | 118 | 40323 |
| Guidaquid | city | Province of Ilocos Sur | Philippines | 17.3 | 120.5666667 | 498 | 15316 |
| Guimarian | city | Province of Ilocos Sur | Philippines | 17.7666667 | 120.4666667 | 108 | 50916 |
| Guimod | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Guimod | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4833333 | 88 | 49346 |
| Guimod Norte | city | Province of Ilocos Sur | Philippines | 17.7333333 | 120.4333333 | 29 | 48847 |
| Guimod Sur | city | Province of Ilocos Sur | Philippines | 17.7166667 | 120.4333333 | 42 | 48847 |
| Guimud Norte | city | Province of Ilocos Sur | Philippines | 17.7333333 | 120.4333333 | 29 | 48847 |
| Guimud Sur | city | Province of Ilocos Sur | Philippines | 17.7166667 | 120.4333333 | 42 | 48847 |
| Guinabang | city | Province of Ilocos Sur | Philippines | 17.2833333 | 120.45 | 114 | 31043 |
| Guinosod | city | Province of Ilocos Sur | Philippines | 17.0333333 | 120.5833333 | 2358 | 9248 |
| Guisit | city | Province of Ilocos Sur | Philippines | 17.7247222 | 120.4225 | 29 | 48847 |
| Gullabeng | city | Province of Ilocos Sur | Philippines | 17.9666667 | 120.5166667 | 134 | 25798 |
| Gusing | city | Province of Ilocos Sur | Philippines | 17.3908333 | 120.5194444 | 82 | 47793 |
| Gwan | city | Province of Ilocos Sur | Philippines | 16.9461111 | 120.4652778 | 275 | 35683 |
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