| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cabalangan | city | Ilocos Sur | Philippines | 17.59 | 120.42 | 16 | 84490 |
| Cabalangegan | city | Ilocos Sur | Philippines | 17.56 | 120.40 | 16 | 96538 |
| Cabangaran | city | Ilocos Sur | Philippines | 17.52 | 120.44 | 121 | 46297 |
| Cabangaran | city | Ilocos Sur | Philippines | 7.48 | 120.43 | 0 | 0 |
| Cabanglotan | city | Ilocos Sur | Philippines | 17.75 | 120.44 | 32 | 53886 |
| Cabangtalan | city | Ilocos Sur | Philippines | 17.88 | 120.45 | 114 | 21844 |
| Cabangtalan | city | Ilocos Sur | Philippines | 17.85 | 120.45 | 88 | 24502 |
| Cabaritan | city | Ilocos Sur | Philippines | 17.65 | 120.40 | 16 | 42733 |
| Cabaritan | city | Ilocos Sur | Philippines | 17.11 | 120.48 | 52 | 52847 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.24 | 120.56 | 830 | 11789 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.40 | 120.70 | 830 | 10965 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.58 | 120.41 | 16 | 93562 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.69 | 120.42 | 39 | 37099 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.32 | 120.47 | 164 | 31412 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.06 | 120.45 | 55 | 26002 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.37 | 120.50 | 72 | 45797 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.57 | 120.40 | 16 | 99409 |
| Cabaroan | city | Ilocos Sur | Philippines | 17.59 | 120.37 | 16 | 79460 |
| Cabaroan Laud | city | Ilocos Sur | Philippines | 17.57 | 120.40 | 16 | 99409 |
| Cabaruan | city | Ilocos Sur | Philippines | 17.88 | 120.48 | 114 | 36139 |
| Cabaruan | city | Ilocos Sur | Philippines | 17.06 | 120.45 | 55 | 26002 |
| Cabaruan | city | Ilocos Sur | Philippines | 17.37 | 120.50 | 72 | 45797 |
| Cabaruan | city | Ilocos Sur | Philippines | 17.58 | 120.41 | 16 | 93562 |
| Cabaruan | city | Ilocos Sur | Philippines | 17.32 | 120.47 | 164 | 31412 |
| Cabaruyan | city | Ilocos Sur | Philippines | 17.54 | 120.48 | 328 | 22742 |
| Cabaugtalan | city | Ilocos Sur | Philippines | 17.85 | 120.45 | 88 | 24502 |
| Cabaya | city | Ilocos Sur | Philippines | 16.87 | 120.57 | 830 | 4995 |
| Cabcaburao | city | Ilocos Sur | Philippines | 17.34 | 120.51 | 124 | 32652 |
| Cabigbigaan | city | Ilocos Sur | Philippines | 17.65 | 120.38 | 16 | 31752 |
| Cabiotan | city | Ilocos Sur | Philippines | 17.18 | 120.47 | 95 | 49885 |
| Cabittaogan | city | Ilocos Sur | Philippines | 17.58 | 120.36 | 16 | 71216 |
| Caboloan | city | Ilocos Sur | Philippines | 17.58 | 120.36 | 16 | 61350 |
| Caborao | city | Ilocos Sur | Philippines | 17.24 | 120.45 | 72 | 38417 |
| Cabuaan | city | Ilocos Sur | Philippines | 17.50 | 120.44 | 160 | 37848 |
| Cabugao | city | Ilocos Sur | Philippines | 17.79 | 120.46 | 42 | 49378 |
| Cabugao | city | Ilocos Sur | Philippines | 16.96 | 120.49 | 262 | 32338 |
| Cabugbugan | city | Ilocos Sur | Philippines | 16.94 | 120.46 | 170 | 35913 |
| Cabulalaan | city | Ilocos Sur | Philippines | 17.07 | 120.47 | 91 | 41602 |
| Cabulanglangan | city | Ilocos Sur | Philippines | 16.92 | 120.47 | 85 | 40597 |
| Cabuloan | city | Ilocos Sur | Philippines | 17.58 | 120.36 | 16 | 61350 |
| Cabulong | city | Ilocos Sur | Philippines | 16.92 | 120.47 | 85 | 40597 |
| Cabunugan | city | Ilocos Sur | Philippines | 17.69 | 120.39 | 19 | 25853 |
| Caburao | city | Ilocos Sur | Philippines | 17.24 | 120.45 | 72 | 38417 |
| Cabusligan | city | Ilocos Sur | Philippines | 17.61 | 120.43 | 16 | 70550 |
| Cacaldingan | city | Ilocos Sur | Philippines | 17.58 | 120.40 | 16 | 96406 |
| Cacandongan | city | Ilocos Sur | Philippines | 17.76 | 120.50 | 259 | 43288 |
| Cadacad | city | Ilocos Sur | Philippines | 17.42 | 120.48 | 75 | 50918 |
| Cadacad | city | Ilocos Sur | Philippines | 17.48 | 120.55 | 298 | 20975 |
| Cadacad | city | Ilocos Sur | Philippines | 17.34 | 120.49 | 62 | 36779 |
| Cadanglaan | city | Ilocos Sur | Philippines | 17.24 | 120.46 | 59 | 38896 |
| Cadanglaan East | city | Ilocos Sur | Philippines | 17.87 | 120.49 | 118 | 36618 |
| Cadoog | city | Ilocos Sur | Philippines | 17.44 | 120.51 | 98 | 44021 |
| Cadoog East | city | Ilocos Sur | Philippines | 17.43 | 120.51 | 124 | 47338 |
| Caei-Layan | city | Ilocos Sur | Philippines | 17.80 | 120.48 | 29 | 43814 |
| Caellayan | city | Ilocos Sur | Philippines | 17.80 | 120.48 | 29 | 43814 |
| Cagayungan | city | Ilocos Sur | Philippines | 17.40 | 120.49 | 68 | 51167 |
| Calaguip | city | Ilocos Sur | Philippines | 17.79 | 120.45 | 59 | 49378 |
| Calaoaan | city | Ilocos Sur | Philippines | 17.18 | 120.45 | 36 | 47719 |
| Calaoaan | city | Ilocos Sur | Philippines | 17.08 | 120.45 | 62 | 37087 |
| Calaohan | city | Ilocos Sur | Philippines | 17.18 | 120.45 | 36 | 47719 |
| Calaotit | city | Ilocos Sur | Philippines | 17.65 | 120.44 | 42 | 53796 |
| Calawaan | city | Ilocos Sur | Philippines | 17.18 | 120.45 | 36 | 47719 |
| Calay-Ab | city | Ilocos Sur | Philippines | 17.65 | 120.37 | 16 | 30307 |
| Calimogtong | city | Ilocos Sur | Philippines | 17.19 | 120.48 | 164 | 48548 |
| Calimugtong | city | Ilocos Sur | Philippines | 17.19 | 120.48 | 164 | 48548 |
| Calingayan | city | Ilocos Sur | Philippines | 17.87 | 120.47 | 114 | 32086 |
| Calioaquio | city | Ilocos Sur | Philippines | 17.15 | 120.55 | 265 | 18939 |
| Callaguip | city | Ilocos Sur | Philippines | 17.54 | 120.38 | 6 | 81317 |
| Callitong | city | Ilocos Sur | Philippines | 17.30 | 120.51 | 75 | 22847 |
| Caloang | city | Ilocos Sur | Philippines | 17.74 | 120.45 | 42 | 51510 |
| Calongbuyan | city | Ilocos Sur | Philippines | 17.16 | 120.43 | 3 | 35055 |
| Calongbuyan | city | Ilocos Sur | Philippines | 17.18 | 120.47 | 95 | 51393 |
| Calongbuyan | city | Ilocos Sur | Philippines | 17.50 | 120.42 | 0 | 33739 |
| Calumbaya | city | Ilocos Sur | Philippines | 17.19 | 120.48 | 164 | 43603 |
| Calumsing | city | Ilocos Sur | Philippines | 17.27 | 120.56 | 328 | 13354 |
| Calunboyan | city | Ilocos Sur | Philippines | 17.50 | 120.42 | 0 | 33739 |
| Calungbuyan | city | Ilocos Sur | Philippines | 17.18 | 120.47 | 95 | 51393 |
| Calungbuyan | city | Ilocos Sur | Philippines | 17.50 | 120.42 | 0 | 33739 |
| Camangaan | city | Ilocos Sur | Philippines | 17.56 | 120.40 | 16 | 97869 |
| Camarao | city | Ilocos Sur | Philippines | 17.46 | 120.47 | 85 | 36304 |
| Camav | city | Ilocos Sur | Philippines | 16.93 | 120.76 | 1847 | 6258 |
| Camindoroan | city | Ilocos Sur | Philippines | 17.75 | 120.43 | 26 | 47879 |
| Camingaguan | city | Ilocos Sur | Philippines | 16.91 | 120.57 | 2624 | 8533 |
| Candalican | city | Ilocos Sur | Philippines | 17.06 | 120.46 | 88 | 34451 |
| Candelaria | city | Ilocos Sur | Philippines | 17.17 | 120.53 | 830 | 28133 |
| Candon | city | Ilocos Sur | Philippines | 17.19 | 120.45 | 59 | 43760 |
| Candon Lakanbalen | city | Ilocos Sur | Philippines | 17.19 | 120.45 | 59 | 43760 |
| Cangao | city | Ilocos Sur | Philippines | 17.19 | 120.62 | 1748 | 4934 |
| Cangitingitan | city | Ilocos Sur | Philippines | 17.87 | 120.45 | 78 | 22168 |
| Caniogan | city | Ilocos Sur | Philippines | 17.51 | 120.43 | 36 | 39636 |
| Caniogan Dacquel | city | Ilocos Sur | Philippines | 17.51 | 120.43 | 36 | 39636 |
| Canogan Daquel | city | Ilocos Sur | Philippines | 17.51 | 120.43 | 36 | 39636 |
| Canteng | city | Ilocos Sur | Philippines | 17.18 | 120.70 | 984 | 2728 |
| Canuguan | city | Ilocos Sur | Philippines | 17.73 | 121.42 | 374 | 8623 |
| Caoayan | city | Ilocos Sur | Philippines | 16.85 | 120.52 | 830 | 16646 |
| Caoayan | city | Ilocos Sur | Philippines | 17.55 | 120.38 | 16 | 81317 |
| Caopat | city | Ilocos Sur | Philippines | 17.59 | 120.39 | 16 | 94081 |
| Capangdanan | city | Ilocos Sur | Philippines | 17.60 | 120.41 | 16 | 80151 |
| Capangpangan | city | Ilocos Sur | Philippines | 17.58 | 120.40 | 16 | 96406 |
| Caparacadan | city | Ilocos Sur | Philippines | 17.54 | 120.36 | 16 | 65922 |
| Capariaan | city | Ilocos Sur | Philippines | 17.03 | 120.45 | 72 | 24672 |
| Capariaan | city | Ilocos Sur | Philippines | 17.55 | 120.40 | 16 | 94899 |
| Capinitan | city | Ilocos Sur | Philippines | 17.07 | 120.57 | 1850 | 9815 |
| Cappacappa | city | Ilocos Sur | Philippines | 17.33 | 120.46 | 82 | 30848 |
| Caraisan | city | Ilocos Sur | Philippines | 17.71 | 120.47 | 164 | 53095 |
| Carcarabasa | city | Ilocos Sur | Philippines | 17.25 | 120.52 | 255 | 20657 |
| Carcarot-Montero | city | Ilocos Sur | Philippines | 17.22 | 120.48 | 104 | 39937 |
| Carmay | city | Ilocos Sur | Philippines | 17.65 | 120.45 | 177 | 48932 |
| Caronoan | city | Ilocos Sur | Philippines | 17.75 | 120.47 | 187 | 54248 |
| Caronuan | city | Ilocos Sur | Philippines | 17.75 | 120.47 | 187 | 54248 |
| Carusipan | city | Ilocos Sur | Philippines | 17.77 | 120.50 | 164 | 42651 |
| Casay | city | Ilocos Sur | Philippines | 17.42 | 120.51 | 164 | 50737 |
| Caset | city | Ilocos Sur | Philippines | 17.83 | 120.48 | 114 | 38212 |
| Casiber | city | Ilocos Sur | Philippines | 17.50 | 120.42 | 0 | 33739 |
| Casilagan | city | Ilocos Sur | Philippines | 17.02 | 120.45 | 42 | 22778 |
| Casilagan | city | Ilocos Sur | Philippines | 17.42 | 120.48 | 75 | 50918 |
| Casilagan | city | Ilocos Sur | Philippines | 17.24 | 120.47 | 59 | 38161 |
| Casilagan | city | Ilocos Sur | Philippines | 17.45 | 120.56 | 328 | 20984 |
| Casilagan Norte | city | Ilocos Sur | Philippines | 17.24 | 120.47 | 59 | 38161 |
| Casilagan Sur | city | Ilocos Sur | Philippines | 17.24 | 120.47 | 82 | 38161 |
| Casili | city | Ilocos Sur | Philippines | 17.66 | 120.38 | 22 | 29114 |
| Catarman | city | Ilocos Sur | Philippines | 17.22 | 120.42 | 82 | 30120 |
| Catayagan | city | Ilocos Sur | Philippines | 17.13 | 120.44 | 82 | 44046 |
| Catcateng | city | Ilocos Sur | Philippines | 17.02 | 120.73 | 1669 | 4478 |
| Caterman | city | Ilocos Sur | Philippines | 17.22 | 120.42 | 82 | 30120 |
| Catib | city | Ilocos Sur | Philippines | 17.73 | 120.45 | 82 | 50876 |
| Catuodaan | city | Ilocos Sur | Philippines | 17.79 | 120.48 | 95 | 46664 |
| Cavayan | city | Ilocos Sur | Philippines | 17.55 | 120.38 | 16 | 81317 |
| Cawag | city | Ilocos Sur | Philippines | 17.00 | 120.78 | 3349 | 5951 |
| Cayus | city | Ilocos Sur | Philippines | 17.17 | 120.67 | 915 | 3788 |
| Cerna | city | Ilocos Sur | Philippines | 17.52 | 120.40 | 6 | 69915 |
| Cervantes | city | Ilocos Sur | Philippines | 16.99 | 120.74 | 1669 | 5490 |
| Cidade Histórica de Vigan | city | Ilocos Sur | Philippines | 17.57 | 120.39 | 16 | 93880 |
| Ciudad Fernandina | city | Ilocos Sur | Philippines | 17.57 | 120.39 | 16 | 93880 |
| Codoog | city | Ilocos Sur | Philippines | 17.44 | 120.51 | 98 | 44021 |
| Colili | city | Ilocos Sur | Philippines | 16.80 | 120.58 | 3349 | 5090 |
| Coliong | city | Ilocos Sur | Philippines | 17.12 | 120.50 | 68 | 51804 |
| Collong | city | Ilocos Sur | Philippines | 17.12 | 120.50 | 68 | 51804 |
| Comandancia | city | Ilocos Sur | Philippines | 17.12 | 120.47 | 59 | 52285 |
| Comillas | city | Ilocos Sur | Philippines | 16.96 | 120.75 | 1669 | 6079 |
| Comillas Norte | city | Ilocos Sur | Philippines | 16.96 | 120.75 | 1669 | 6079 |
| Concepcion | city | Ilocos Sur | Philippines | 17.13 | 120.61 | 1148 | 4600 |
| Conconig | city | Ilocos Sur | Philippines | 17.12 | 120.46 | 134 | 49979 |
| Coscosnong | city | Ilocos Sur | Philippines | 17.08 | 120.45 | 62 | 37087 |
| Cosocos | city | Ilocos Sur | Philippines | 17.47 | 120.58 | 830 | 15616 |
| Cosucos | city | Ilocos Sur | Philippines | 17.47 | 120.58 | 830 | 15616 |
| Cowag | city | Ilocos Sur | Philippines | 17.00 | 120.78 | 3349 | 5951 |
| Cubcubbu-ot | city | Ilocos Sur | Philippines | 17.16 | 120.49 | 164 | 48503 |
| Cubcubbuat | city | Ilocos Sur | Philippines | 17.16 | 120.49 | 164 | 48503 |
| Cucubbuot | city | Ilocos Sur | Philippines | 17.20 | 120.45 | 39 | 45061 |
| Culili | city | Ilocos Sur | Philippines | 16.80 | 120.58 | 3349 | 5090 |
| Culliang | city | Ilocos Sur | Philippines | 16.80 | 120.58 | 3349 | 5090 |
| Curtin | city | Ilocos Sur | Philippines | 17.86 | 120.47 | 118 | 33238 |
| Cuta | city | Ilocos Sur | Philippines | 17.58 | 120.38 | 16 | 88775 |