| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ibujan | city | Province of Isabela | Philippines | 16.8166667 | 122.05 | 616 | 6647 |
| Ilagan | city | Province of Isabela | Philippines | 17.1480556 | 121.8908333 | 193 | 24197 |
| Imbia | city | Province of Isabela | Philippines | 17.1869444 | 121.75 | 160 | 21929 |
| Imbiao | city | Province of Isabela | Philippines | 17.1869444 | 121.75 | 160 | 21929 |
| Ingud Norte | city | Province of Isabela | Philippines | 16.8194444 | 121.7805556 | 141 | 39933 |
| Ingud Sur | city | Province of Isabela | Philippines | 16.8111111 | 121.7608333 | 154 | 39933 |
| Inguo | city | Province of Isabela | Philippines | 16.8166667 | 121.75 | 173 | 39933 |
| Ipil | city | Province of Isabela | Philippines | 16.6983333 | 121.6388889 | 209 | 35253 |
| Ipil Grande | city | Province of Isabela | Philippines | 16.6983333 | 121.6388889 | 209 | 35253 |
| Ipil Pegueno | city | Province of Isabela | Philippines | 16.6880556 | 121.6494444 | 216 | 35253 |
| Ipil Pegueño | city | Province of Isabela | Philippines | 16.6880556 | 121.6494444 | 216 | 35253 |
| Izon | city | Province of Isabela | Philippines | 17.4333333 | 121.7666667 | 141 | 21259 |
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