| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Dadaeman | city | Province of Ilocos Norte | Philippines | 18.3 | 120.6166667 | 164 | 22575 |
| Dadaur | city | Province of Ilocos Norte | Philippines | 18.5041667 | 120.7102778 | 118 | 9117 |
| Dalayap | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.5166667 | 242 | 25798 |
| Daldalayap | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.5333333 | 232 | 25798 |
| Dalipaso | city | Province of Ilocos Norte | Philippines | 18.3666667 | 120.6166667 | 144 | 11656 |
| Dalumpinas | city | Province of Ilocos Norte | Philippines | 18.55 | 120.8333333 | 429 | 10139 |
| Dampig | city | Province of Ilocos Norte | Philippines | 18.5502778 | 120.8166667 | 164 | 10139 |
| Danao | city | Province of Ilocos Norte | Philippines | 18.35 | 120.7333333 | 328 | 9427 |
| Danao | city | Province of Ilocos Norte | Philippines | 18.5166667 | 120.7333333 | 164 | 9117 |
| Danao and Oangagan | city | Province of Ilocos Norte | Philippines | 18.35 | 120.7333333 | 328 | 9427 |
| Daparyden | city | Province of Ilocos Norte | Philippines | 18.0666667 | 120.65 | 410 | 45070 |
| Daramuangan | city | Province of Ilocos Norte | Philippines | 18.0166667 | 120.6333333 | 492 | 41973 |
| Darao | city | Province of Ilocos Norte | Philippines | 18.2 | 120.55 | 36 | 81961 |
| Darasdas | city | Province of Ilocos Norte | Philippines | 18.0261111 | 120.7161111 | 216 | 32257 |
| Darasdas | city | Province of Ilocos Norte | Philippines | 18.1166667 | 120.7666667 | 150 | 23112 |
| Darayday | city | Province of Ilocos Norte | Philippines | 18.1833333 | 120.5666667 | 72 | 81961 |
| Dariwdiw | city | Province of Ilocos Norte | Philippines | 18.1 | 120.6 | 164 | 62604 |
| Daurao | city | Province of Ilocos Norte | Philippines | 18.2 | 120.55 | 36 | 81961 |
| Daurao | city | Province of Ilocos Norte | Philippines | 18.2333333 | 120.5666667 | 36 | 59926 |
| Davila | city | Province of Ilocos Norte | Philippines | 18.4730556 | 120.58 | 164 | 4411 |
| Dayas | city | Province of Ilocos Norte | Philippines | 18.5 | 120.7166667 | 328 | 12788 |
| Derrap | city | Province of Ilocos Norte | Philippines | 18.5166667 | 120.6166667 | 196 | 5041 |
| Dichai | city | Province of Ilocos Norte | Philippines | 18.2333333 | 120.5833333 | 98 | 59926 |
| Dilap | city | Province of Ilocos Norte | Philippines | 18.3666667 | 120.6166667 | 144 | 11656 |
| Dilavo | city | Province of Ilocos Norte | Philippines | 18.4297222 | 120.5955556 | 314 | 9707 |
| Dilayo | city | Province of Ilocos Norte | Philippines | 18.4297222 | 120.5955556 | 314 | 9707 |
| Dilpoc | city | Province of Ilocos Norte | Philippines | 18.3586111 | 120.6225 | 154 | 11656 |
| Dimamaga | city | Province of Ilocos Norte | Philippines | 18.3166667 | 120.75 | 564 | 6855 |
| Dimamaga and Tamdagan | city | Province of Ilocos Norte | Philippines | 18.3166667 | 120.75 | 564 | 6855 |
| Dingras | city | Province of Ilocos Norte | Philippines | 18.1091667 | 120.6927778 | 131 | 36276 |
| Dipilat | city | Province of Ilocos Norte | Philippines | 18.3166667 | 120.7166667 | 328 | 7910 |
| Dirique | city | Province of Ilocos Norte | Philippines | 18.4666667 | 120.5833333 | 164 | 4411 |
| Dolores | city | Province of Ilocos Norte | Philippines | 18.0666667 | 120.5166667 | 39 | 37721 |
| Doro | city | Province of Ilocos Norte | Philippines | 18.25 | 120.55 | 3 | 59926 |
| Dumalneg | city | Province of Ilocos Norte | Philippines | 18.5 | 120.8166667 | 1696 | 8559 |
| Dungondungon | city | Province of Ilocos Norte | Philippines | 18.5 | 120.6833333 | 252 | 9767 |
| Duripes | city | Province of Ilocos Norte | Philippines | 18.25 | 120.6166667 | 85 | 70006 |
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