| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Pa-oc | city | Province of Ilocos Sur | Philippines | 17.1 | 120.5166667 | 164 | 38398 |
| Paagan | city | Province of Ilocos Sur | Philippines | 16.7833333 | 120.35 | 265 | 43018 |
| Paagan | city | Province of Ilocos Sur | Philippines | 16.7833333 | 120.4666667 | 429 | 29997 |
| Paanaban | city | Province of Ilocos Sur | Philippines | 17.069444 | 120.5766667 | 2296 | 13399 |
| Paaraban | city | Province of Ilocos Sur | Philippines | 17.069444 | 120.5766667 | 2296 | 13399 |
| Pacang | city | Province of Ilocos Sur | Philippines | 17.35 | 120.5 | 72 | 39420 |
| Padaoil | city | Province of Ilocos Sur | Philippines | 17.0758333 | 120.5338889 | 328 | 29505 |
| Padayao | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.5 | 72 | 25605 |
| Padayao-Dirdirg | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.5 | 72 | 25605 |
| Padu Chico | city | Province of Ilocos Sur | Philippines | 17.6566667 | 120.4005556 | 45 | 44749 |
| Padu Grande | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4166667 | 52 | 54751 |
| Paduros | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.4833333 | 164 | 32306 |
| Padwal | city | Province of Ilocos Sur | Philippines | 17.8 | 120.45 | 19 | 37587 |
| Pagago | city | Province of Ilocos Sur | Philippines | 16.8666667 | 120.5333333 | 1263 | 19330 |
| Pagangpang | city | Province of Ilocos Sur | Philippines | 17.19 | 120.5033333 | 190 | 32179 |
| Pagbacsayan | city | Province of Ilocos Sur | Philippines | 17.55 | 120.3833333 | 16 | 92225 |
| Pagogo | city | Province of Ilocos Sur | Philippines | 16.8666667 | 120.5333333 | 1263 | 19330 |
| Pagsanaan | city | Province of Ilocos Sur | Philippines | 17.7033333 | 120.4252778 | 32 | 46641 |
| Paguraper | city | Province of Ilocos Sur | Philippines | 17.65 | 120.3833333 | 16 | 44749 |
| Paing | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.45 | 98 | 78350 |
| Paingan | city | Province of Ilocos Sur | Philippines | 17 | 120.45 | 59 | 19553 |
| Pal-logan | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.45 | 167 | 30053 |
| Palacapac | city | Province of Ilocos Sur | Philippines | 17.1511111 | 120.4922222 | 246 | 52155 |
| Palali Norte | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Palali Sur | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Palasipas | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.5166667 | 754 | 24777 |
| Palicud | city | Province of Ilocos Sur | Philippines | 17.3994444 | 120.5175 | 127 | 47793 |
| Paltoc | city | Province of Ilocos Sur | Philippines | 17.2213889 | 120.5669444 | 541 | 13841 |
| Panar | city | Province of Ilocos Sur | Philippines | 17.3833333 | 120.4666667 | 39 | 47927 |
| Panar Sumagui | city | Province of Ilocos Sur | Philippines | 17.3833333 | 120.4666667 | 39 | 47927 |
| Panay | city | Province of Ilocos Sur | Philippines | 17.65 | 120.3833333 | 16 | 44749 |
| Panay | city | Province of Ilocos Sur | Philippines | 17.6833333 | 120.4 | 29 | 29976 |
| Pandan | city | Province of Ilocos Sur | Philippines | 17.5333333 | 120.3666667 | 3 | 44767 |
| Pandayan | city | Province of Ilocos Sur | Philippines | 16.8833333 | 120.6 | 2864 | 5696 |
| Pangada | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3666667 | 16 | 62243 |
| Pangaotan | city | Province of Ilocos Sur | Philippines | 16.85 | 120.5166667 | 465 | 19330 |
| Pangpangdan | city | Province of Ilocos Sur | Philippines | 17.6688889 | 120.4013889 | 39 | 29976 |
| Panpanaoil | city | Province of Ilocos Sur | Philippines | 17.2333333 | 120.6 | 1148 | 7610 |
| Pantay Baggoc | city | Province of Ilocos Sur | Philippines | 17.55 | 120.55 | 249 | 23779 |
| Pantay Daya | city | Province of Ilocos Sur | Philippines | 17.5666667 | 120.3666667 | 16 | 62243 |
| Pantay Laud | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Pantay Tamorong | city | Province of Ilocos Sur | Philippines | 17.5308333 | 120.4091667 | 16 | 68022 |
| Pantay-Tamurong | city | Province of Ilocos Sur | Philippines | 17.5308333 | 120.4091667 | 16 | 68022 |
| Pantoc | city | Province of Ilocos Sur | Philippines | 17.4166667 | 120.4833333 | 75 | 47768 |
| Paoa | city | Province of Ilocos Sur | Philippines | 17.6 | 120.3833333 | 16 | 82684 |
| Paras | city | Province of Ilocos Sur | Philippines | 17.1847222 | 120.4288889 | 16 | 40620 |
| Paras | city | Province of Ilocos Sur | Philippines | 17.6666667 | 120.4333333 | 82 | 46641 |
| Paraton | city | Province of Ilocos Sur | Philippines | 17.85 | 120.45 | 88 | 25726 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3333333 | 0 | 20764 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.55 | 120.3666667 | 16 | 62243 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.85 | 120.45 | 88 | 25726 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Paratong | city | Province of Ilocos Sur | Philippines | 16.9911111 | 120.4522222 | 98 | 19553 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.4166667 | 120.4666667 | 78 | 47768 |
| Paratong | city | Province of Ilocos Sur | Philippines | 17.9166667 | 120.4666667 | 144 | 25698 |
| Parioc | city | Province of Ilocos Sur | Philippines | 17.1666667 | 120.4666667 | 134 | 49346 |
| Parioc | city | Province of Ilocos Sur | Philippines | 17.1666667 | 120.4666667 | 134 | 49346 |
| Parioc Primero | city | Province of Ilocos Sur | Philippines | 17.1666667 | 120.4666667 | 134 | 49346 |
| Parioc Segundo | city | Province of Ilocos Sur | Philippines | 17.1666667 | 120.4666667 | 134 | 49346 |
| Paritang | city | Province of Ilocos Sur | Philippines | 17.8833333 | 120.45 | 114 | 18992 |
| Parparia | city | Province of Ilocos Sur | Philippines | 17.45 | 120.5 | 82 | 45796 |
| Passis | city | Province of Ilocos Sur | Philippines | 17.8666667 | 120.4833333 | 141 | 37427 |
| Pasungol | city | Province of Ilocos Sur | Philippines | 17.4833333 | 120.4333333 | 127 | 32500 |
| Patac | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4833333 | 88 | 49346 |
| Patac | city | Province of Ilocos Sur | Philippines | 17.3 | 120.5166667 | 75 | 25605 |
| Patac Barangan | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4833333 | 88 | 49346 |
| Patacapac | city | Province of Ilocos Sur | Philippines | 17.1511111 | 120.4922222 | 246 | 52155 |
| Patiacan | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.75 | 2083 | 2903 |
| Patiacang | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.75 | 2083 | 2903 |
| Patong | city | Province of Ilocos Sur | Philippines | 17.6777778 | 120.4586111 | 196 | 47352 |
| Patpata | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4333333 | 19 | 40620 |
| Patpata | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4333333 | 19 | 40620 |
| Patpata Primero | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4333333 | 19 | 40620 |
| Patpata Segundo | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4333333 | 19 | 40620 |
| Patro | city | Province of Ilocos Sur | Philippines | 17.8 | 120.4 | 16 | 15368 |
| Patucannay | city | Province of Ilocos Sur | Philippines | 17.5166667 | 120.4166667 | 0 | 58129 |
| Payad | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4166667 | 52 | 54751 |
| Paypayad | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4333333 | 19 | 40620 |
| Pedro de Bulbulucan | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.5 | 164 | 37864 |
| Pelid | city | Province of Ilocos Sur | Philippines | 17.7833333 | 120.5 | 252 | 27230 |
| Pettao | city | Province of Ilocos Sur | Philippines | 17.2213889 | 120.5775 | 708 | 13841 |
| Pias | city | Province of Ilocos Sur | Philippines | 17.1288889 | 120.5222222 | 72 | 37864 |
| Picau | city | Province of Ilocos Sur | Philippines | 16.85 | 120.6 | 984 | 3911 |
| Pidlac | city | Province of Ilocos Sur | Philippines | 17.15 | 120.6166667 | 1742 | 7653 |
| Pidpid | city | Province of Ilocos Sur | Philippines | 17.05 | 120.4833333 | 328 | 38465 |
| Pidpid | city | Province of Ilocos Sur | Philippines | 16.8666667 | 120.6 | 1640 | 3911 |
| Pila | city | Province of Ilocos Sur | Philippines | 17.7947222 | 120.4216667 | 78 | 37587 |
| Pila | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Pila | city | Province of Ilocos Sur | Philippines | 17.25 | 120.4833333 | 118 | 40323 |
| Pilar-Baybay | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.45 | 62 | 25396 |
| Pilpilid | city | Province of Ilocos Sur | Philippines | 16.7 | 120.55 | 984 | 11026 |
| Pinipin | city | Province of Ilocos Sur | Philippines | 17.0619444 | 120.4486111 | 55 | 25396 |
| Pinipin | city | Province of Ilocos Sur | Philippines | 17.05 | 120.4833333 | 328 | 38465 |
| Poduco | city | Province of Ilocos Sur | Philippines | 16.8333333 | 120.5166667 | 298 | 17299 |
| Pong-ol | city | Province of Ilocos Sur | Philippines | 17.55 | 120.3666667 | 16 | 62243 |
| Poro | city | Province of Ilocos Sur | Philippines | 17.5080556 | 120.4008333 | 0 | 68022 |
| Poroc | city | Province of Ilocos Sur | Philippines | 17.7 | 120.4666667 | 127 | 47352 |
| Potolic | city | Province of Ilocos Sur | Philippines | 17.7166667 | 120.4166667 | 22 | 48847 |
| Pudoc | city | Province of Ilocos Sur | Philippines | 17.6066667 | 120.3702778 | 16 | 51713 |
| Pudoc | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.4166667 | 98 | 30053 |
| Pudoc Norte | city | Province of Ilocos Sur | Philippines | 17.6066667 | 120.3702778 | 16 | 51713 |
| Pudoc Sur | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3666667 | 16 | 51713 |
| Pudoc West | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.4166667 | 98 | 30053 |
| Pug-os | city | Province of Ilocos Sur | Philippines | 17.8333333 | 120.4666667 | 88 | 42855 |
| Pugos | city | Province of Ilocos Sur | Philippines | 17.8386111 | 120.4547222 | 114 | 25726 |
| Pula | city | Province of Ilocos Sur | Philippines | 16.9166667 | 120.4833333 | 187 | 35683 |
| Pura Pinget | city | Province of Ilocos Sur | Philippines | 17.6808333 | 120.3572222 | 3 | 14364 |
| Puro | city | Province of Ilocos Sur | Philippines | 17.6808333 | 120.3572222 | 3 | 14364 |
| Puro | city | Province of Ilocos Sur | Philippines | 17.55 | 120.3833333 | 16 | 92225 |
| Puro Pinget | city | Province of Ilocos Sur | Philippines | 17.6808333 | 120.3572222 | 3 | 14364 |
| Puro Pingit | city | Province of Ilocos Sur | Philippines | 17.6808333 | 120.3572222 | 3 | 14364 |
| Puroc a Dacquel | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Puru Pinget | city | Province of Ilocos Sur | Philippines | 17.6808333 | 120.3572222 | 3 | 14364 |
| Puspus | city | Province of Ilocos Sur | Philippines | 17.6 | 120.4166667 | 16 | 72043 |
| Pussuac | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4 | 36 | 44749 |
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