UpAlphabetical listing of Places in Isabela
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Ibujan | city | Isabela | Philippines | 16.83 | 122.06 | 396 | 6586 |
| Ilagan | city | Isabela | Philippines | 17.15 | 121.89 | 193 | 22801 |
| Imbia | city | Isabela | Philippines | 17.19 | 121.75 | 160 | 19432 |
| Imbiao | city | Isabela | Philippines | 17.19 | 121.75 | 160 | 19432 |
| Imbiao | city | Isabela | Philippines | 17.16 | 121.68 | 183 | 23669 |
| Inanama | city | Isabela | Philippines | 16.78 | 121.59 | 249 | 65633 |
| Ingud Norte | city | Isabela | Philippines | 16.81 | 121.76 | 154 | 38792 |
| Ingud Sur | city | Isabela | Philippines | 16.80 | 121.76 | 137 | 38195 |
| Inguo | city | Isabela | Philippines | 16.82 | 121.75 | 173 | 39677 |
| Iomines | city | Isabela | Philippines | 17.04 | 121.90 | 285 | 30259 |
| Ipil | city | Isabela | Philippines | 16.70 | 121.64 | 209 | 38028 |
| Ipil Grande | city | Isabela | Philippines | 16.70 | 121.64 | 209 | 38028 |
| Ipil Pegueño | city | Isabela | Philippines | 16.70 | 121.63 | 209 | 40889 |
| Ipil Pequeño | city | Isabela | Philippines | 16.70 | 121.63 | 209 | 40889 |
| Izon | city | Isabela | Philippines | 17.45 | 121.78 | 134 | 15985 |
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