| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ababut | city | Province of Ilocos Norte | Philippines | 18.1569444 | 120.6958333 | 134 | 33685 |
| Abaca | city | Province of Ilocos Norte | Philippines | 18.5311111 | 120.7577778 | 85 | 10503 |
| Abacai | city | Province of Ilocos Norte | Philippines | 18.5311111 | 120.7577778 | 85 | 10503 |
| Abec | city | Province of Ilocos Norte | Philippines | 18.35 | 120.6333333 | 108 | 15701 |
| Abucay | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.7333333 | 141 | 14255 |
| Adam | city | Province of Ilocos Norte | Philippines | 18.4666667 | 120.9 | 761 | 5696 |
| Adams | city | Province of Ilocos Norte | Philippines | 18.4666667 | 120.9 | 761 | 5696 |
| Agaga | city | Province of Ilocos Norte | Philippines | 18.5 | 120.5833333 | 118 | 4411 |
| Agaga | city | Province of Ilocos Norte | Philippines | 18.45 | 120.65 | 554 | 12184 |
| Agapang | city | Province of Ilocos Norte | Philippines | 18.2333333 | 120.7166667 | 262 | 9031 |
| Aggao | city | Province of Ilocos Norte | Philippines | 18.6 | 120.8833333 | 0 | 5057 |
| Aggasi | city | Province of Ilocos Norte | Philippines | 18.5430556 | 120.8291667 | 328 | 10139 |
| Aguire | city | Province of Ilocos Norte | Philippines | 17.9119444 | 120.5327778 | 98 | 36121 |
| Aguitap | city | Province of Ilocos Norte | Philippines | 18.1166667 | 120.7833333 | 229 | 23112 |
| Agunit | city | Province of Ilocos Norte | Philippines | 18.0333333 | 120.7333333 | 246 | 32257 |
| Al-lalabang | city | Province of Ilocos Norte | Philippines | 18.0694444 | 120.5819444 | 134 | 56631 |
| Alabaan | city | Province of Ilocos Norte | Philippines | 18.0166667 | 120.6666667 | 170 | 33860 |
| Alallutan | city | Province of Ilocos Norte | Philippines | 17.9 | 120.5666667 | 98 | 22441 |
| Alaoao | city | Province of Ilocos Norte | Philippines | 18.4969444 | 120.7180556 | 328 | 12788 |
| Allangigan | city | Province of Ilocos Norte | Philippines | 18.0333333 | 120.5666667 | 118 | 47608 |
| Allangigan | city | Province of Ilocos Norte | Philippines | 18.35 | 120.6833333 | 856 | 12997 |
| Allangigan | city | Province of Ilocos Norte | Philippines | 18.3666667 | 120.6833333 | 987 | 12997 |
| Aloang | city | Province of Ilocos Norte | Philippines | 18.0833333 | 120.75 | 137 | 28240 |
| Alsem | city | Province of Ilocos Norte | Philippines | 18.3 | 120.7 | 262 | 13942 |
| Alsem | city | Province of Ilocos Norte | Philippines | 18.2672222 | 120.725 | 987 | 7037 |
| Ambagsang | city | Province of Ilocos Norte | Philippines | 17.95 | 120.6833333 | 278 | 16174 |
| Ambagsang | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.6833333 | 219 | 27042 |
| Ambagsong | city | Province of Ilocos Norte | Philippines | 17.95 | 120.6833333 | 278 | 16174 |
| Anangui | city | Province of Ilocos Norte | Philippines | 18.1 | 120.5666667 | 147 | 66131 |
| Ang-gapang | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.5 | 164 | 25798 |
| Anggapang Sur | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.5 | 164 | 25798 |
| Anomang Menor | city | Province of Ilocos Norte | Philippines | 17.55 | 120.3833333 | 16 | 92225 |
| Anonang Menor | city | Province of Ilocos Norte | Philippines | 17.55 | 120.3833333 | 16 | 92225 |
| Aoang | city | Province of Ilocos Norte | Philippines | 18.0833333 | 120.75 | 137 | 28240 |
| Apaleng | city | Province of Ilocos Norte | Philippines | 18.0694444 | 120.5819444 | 134 | 56631 |
| Apalot | city | Province of Ilocos Norte | Philippines | 17.95 | 120.4833333 | 55 | 25698 |
| Apatot | city | Province of Ilocos Norte | Philippines | 17.95 | 120.4833333 | 55 | 25698 |
| Apaya | city | Province of Ilocos Norte | Philippines | 17.9 | 120.4333333 | 0 | 18992 |
| Apaya | city | Province of Ilocos Norte | Philippines | 17.9 | 120.4666667 | 114 | 34543 |
| Apaya | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.5333333 | 78 | 46413 |
| Ar-aro-o | city | Province of Ilocos Norte | Philippines | 18.6166667 | 120.7833333 | 164 | 4037 |
| Aranio | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.5333333 | 78 | 46413 |
| Araniw | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.5333333 | 78 | 46413 |
| Arua-ay | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.7166667 | 124 | 14255 |
| Arvarga | city | Province of Ilocos Norte | Philippines | 18.6297222 | 120.8147222 | 111 | 3950 |
| Aryargo | city | Province of Ilocos Norte | Philippines | 18.6297222 | 120.8147222 | 111 | 3950 |
| Asin | city | Province of Ilocos Norte | Philippines | 17.2833333 | 120.55 | 656 | 13561 |
| Assace | city | Province of Ilocos Norte | Philippines | 18.55 | 120.8166667 | 164 | 10139 |
| Atimon | city | Province of Ilocos Norte | Philippines | 18.2 | 120.5833333 | 26 | 81961 |
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