| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Baang | city | Province of Ilocos Sur | Philippines | 17.2375 | 120.5894444 | 882 | 7610 |
| Babal-lasiuan | city | Province of Ilocos Sur | Philippines | 17.3833333 | 120.5333333 | 147 | 47793 |
| Baballasioan | city | Province of Ilocos Sur | Philippines | 17.3833333 | 120.5333333 | 147 | 47793 |
| Babayoan | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.45 | 62 | 25396 |
| Bacangan | city | Province of Ilocos Sur | Philippines | 17.0666667 | 120.55 | 984 | 13399 |
| Bacsayan | city | Province of Ilocos Sur | Philippines | 17.0666667 | 120.4666667 | 91 | 38465 |
| Bacsil | city | Province of Ilocos Sur | Philippines | 17.7 | 120.45 | 111 | 46641 |
| Bacsil | city | Province of Ilocos Sur | Philippines | 17.7252778 | 120.4538889 | 36 | 48847 |
| Badac | city | Province of Ilocos Sur | Philippines | 17.15 | 120.6166667 | 1742 | 7653 |
| Baduios | city | Province of Ilocos Sur | Philippines | 16.9166667 | 120.75 | 2221 | 8215 |
| Baduto | city | Province of Ilocos Sur | Philippines | 16.9166667 | 120.75 | 2221 | 8215 |
| Baetan | city | Province of Ilocos Sur | Philippines | 17.5166667 | 120.4333333 | 68 | 58129 |
| Bagani | city | Province of Ilocos Sur | Philippines | 17.2030556 | 120.4552778 | 150 | 40620 |
| Bagar | city | Province of Ilocos Sur | Philippines | 17.2166667 | 120.45 | 75 | 36480 |
| Bagbagotot | city | Province of Ilocos Sur | Philippines | 17.2333333 | 120.4833333 | 85 | 40323 |
| Bagsanan | city | Province of Ilocos Sur | Philippines | 17.7033333 | 120.4252778 | 32 | 46641 |
| Bahet | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Bais | city | Province of Ilocos Sur | Philippines | 16.8833333 | 120.55 | 849 | 11375 |
| Bal-lasiw see Balasiw | city | Province of Ilocos Sur | Philippines | 17.4833333 | 120.5166667 | 206 | 30562 |
| Bal-lisiw | city | Province of Ilocos Sur | Philippines | 17.4833333 | 120.5166667 | 206 | 30562 |
| Balaleng | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Balasiw | city | Province of Ilocos Sur | Philippines | 17.4833333 | 120.5166667 | 206 | 30562 |
| Balaweg | city | Province of Ilocos Sur | Philippines | 17.45 | 120.5333333 | 164 | 45796 |
| Balaybay | city | Province of Ilocos Sur | Philippines | 17.95 | 120.5166667 | 82 | 31568 |
| Balidbid | city | Province of Ilocos Sur | Philippines | 17.15 | 120.5333333 | 104 | 37864 |
| Baliling | city | Province of Ilocos Sur | Philippines | 16.9833333 | 120.7166667 | 1505 | 6660 |
| Baling | city | Province of Ilocos Sur | Philippines | 17.1 | 120.4333333 | 16 | 35098 |
| Balingaoan | city | Province of Ilocos Sur | Philippines | 17.2333333 | 120.45 | 78 | 36480 |
| Balingaoan | city | Province of Ilocos Sur | Philippines | 17.2147222 | 120.4580556 | 88 | 36480 |
| Balio | city | Province of Ilocos Sur | Philippines | 17.7333333 | 120.45 | 82 | 48847 |
| Ballasio | city | Province of Ilocos Sur | Philippines | 17.4833333 | 120.5166667 | 206 | 30562 |
| Bals | city | Province of Ilocos Sur | Philippines | 16.8833333 | 120.55 | 849 | 11375 |
| Baluarte | city | Province of Ilocos Sur | Philippines | 17.15 | 120.5333333 | 104 | 37864 |
| Balugang | city | Province of Ilocos Sur | Philippines | 17.305 | 120.5236111 | 354 | 25605 |
| Banacao | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.7 | 2076 | 4487 |
| Banao | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.4666667 | 164 | 32306 |
| Banaoang | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Banaoang | city | Province of Ilocos Sur | Philippines | 17.5544444 | 120.4563889 | 229 | 78350 |
| Banayoyo | city | Province of Ilocos Sur | Philippines | 17.2333333 | 120.4833333 | 85 | 40323 |
| Banbanaal | city | Province of Ilocos Sur | Philippines | 17.2261111 | 120.5097222 | 82 | 25542 |
| Banbanaba | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Bangabangar | city | Province of Ilocos Sur | Philippines | 17.3333333 | 120.5166667 | 328 | 25605 |
| Bangbanga | city | Province of Ilocos Sur | Philippines | 17.9333333 | 120.45 | 29 | 13673 |
| Bangbangar | city | Province of Ilocos Sur | Philippines | 17.3333333 | 120.5166667 | 328 | 25605 |
| Banglayan | city | Province of Ilocos Sur | Philippines | 17.4666667 | 120.5 | 328 | 30562 |
| Bantay | city | Province of Ilocos Sur | Philippines | 17.5847222 | 120.3891667 | 16 | 82684 |
| Bantugo | city | Province of Ilocos Sur | Philippines | 17.45 | 120.5333333 | 164 | 45796 |
| Banucal | city | Province of Ilocos Sur | Philippines | 17.2852778 | 120.5505556 | 656 | 13561 |
| Bao-as | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Barabong | city | Province of Ilocos Sur | Philippines | 17.5333333 | 120.4333333 | 13 | 58129 |
| Baracbac | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.6833333 | 1407 | 3758 |
| Baracbac | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.7 | 1259 | 3669 |
| Baraoas | city | Province of Ilocos Sur | Philippines | 17.2833333 | 120.4333333 | 85 | 31043 |
| Barbar | city | Province of Ilocos Sur | Philippines | 17.7333333 | 120.45 | 82 | 48847 |
| Barbarit | city | Province of Ilocos Sur | Philippines | 17.7119444 | 120.4430556 | 52 | 48847 |
| Barikir | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.5166667 | 328 | 25605 |
| Baringcocorong | city | Province of Ilocos Sur | Philippines | 16.9613889 | 120.4666667 | 301 | 27776 |
| Baringcucurong | city | Province of Ilocos Sur | Philippines | 16.9613889 | 120.4666667 | 301 | 27776 |
| Barraca | city | Province of Ilocos Sur | Philippines | 17.5469444 | 120.3663889 | 16 | 62243 |
| Basig | city | Province of Ilocos Sur | Philippines | 16.8166667 | 120.5166667 | 656 | 17299 |
| Basiing | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Basud | city | Province of Ilocos Sur | Philippines | 17.5205556 | 120.4422222 | 160 | 58129 |
| Basug | city | Province of Ilocos Sur | Philippines | 17.5205556 | 120.4422222 | 160 | 58129 |
| Basup | city | Province of Ilocos Sur | Philippines | 17.5205556 | 120.4422222 | 160 | 58129 |
| Batan | city | Province of Ilocos Sur | Philippines | 17.8111111 | 120.4991667 | 137 | 42855 |
| Batangen | city | Province of Ilocos Sur | Philippines | 17.05 | 120.5833333 | 1866 | 13399 |
| Batbato | city | Province of Ilocos Sur | Philippines | 16.9 | 120.55 | 780 | 11375 |
| Bato | city | Province of Ilocos Sur | Philippines | 17.3333333 | 120.5 | 55 | 25605 |
| Battog | city | Province of Ilocos Sur | Philippines | 17.8833333 | 120.4666667 | 114 | 34543 |
| Bauguen | city | Province of Ilocos Sur | Philippines | 17.1547222 | 120.5394444 | 347 | 37864 |
| Baybay | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.4333333 | 3 | 25396 |
| Baybayading | city | Province of Ilocos Sur | Philippines | 17.15 | 120.5333333 | 104 | 37864 |
| Bayubay Norte | city | Province of Ilocos Sur | Philippines | 17.6 | 120.3833333 | 16 | 82684 |
| Bayubay Sur | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3666667 | 16 | 62243 |
| Bayugao | city | Province of Ilocos Sur | Philippines | 17.0833333 | 120.4333333 | 3 | 25396 |
| Bayugao | city | Province of Ilocos Sur | Philippines | 17.0666667 | 120.45 | 65 | 25396 |
| Becques | city | Province of Ilocos Sur | Philippines | 16.9833333 | 120.45 | 118 | 19553 |
| Beddeng | city | Province of Ilocos Sur | Philippines | 17.5666667 | 120.3833333 | 16 | 92225 |
| Belen | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Bengngang | city | Province of Ilocos Sur | Philippines | 17.35 | 120.45 | 118 | 23885 |
| Bengñgang | city | Province of Ilocos Sur | Philippines | 17.35 | 120.45 | 118 | 23885 |
| Besalan | city | Province of Ilocos Sur | Philippines | 17.1 | 120.4833333 | 104 | 48637 |
| Besang | city | Province of Ilocos Sur | Philippines | 17.8166667 | 120.45 | 49 | 37587 |
| Bessang | city | Province of Ilocos Sur | Philippines | 17.3 | 120.5333333 | 164 | 25605 |
| Bessang | city | Province of Ilocos Sur | Philippines | 16.9927778 | 120.6783333 | 2624 | 6374 |
| Beto | city | Province of Ilocos Sur | Philippines | 17 | 120.5166667 | 1020 | 21221 |
| Biao | city | Province of Ilocos Sur | Philippines | 17.3872222 | 120.4577778 | 0 | 25699 |
| Bidbiday | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4666667 | 95 | 49346 |
| Big-Big | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.4333333 | 108 | 24405 |
| Bigbiga | city | Province of Ilocos Sur | Philippines | 17.3166667 | 120.4333333 | 108 | 24405 |
| Bilig | city | Province of Ilocos Sur | Philippines | 16.8333333 | 120.5833333 | 1968 | 7720 |
| Binacud | city | Province of Ilocos Sur | Philippines | 17.8666667 | 120.45 | 78 | 25726 |
| Binalayangan | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4 | 36 | 44749 |
| Bingngan | city | Province of Ilocos Sur | Philippines | 17.6236111 | 120.4397222 | 85 | 72043 |
| Binongan | city | Province of Ilocos Sur | Philippines | 17.6236111 | 120.4397222 | 85 | 72043 |
| Biqui | city | Province of Ilocos Sur | Philippines | 17.25 | 120.5166667 | 255 | 25542 |
| Bisangol | city | Province of Ilocos Sur | Philippines | 17.2333333 | 120.4833333 | 85 | 40323 |
| Bitalag | city | Province of Ilocos Sur | Philippines | 16.9666667 | 120.4666667 | 246 | 27776 |
| Bitbitnong | city | Province of Ilocos Sur | Philippines | 17.3333333 | 120.4833333 | 226 | 32306 |
| Bitlingan | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.7 | 5413 | 6856 |
| Bitong | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.4666667 | 95 | 49346 |
| Bolingaoan | city | Province of Ilocos Sur | Philippines | 17.2147222 | 120.4580556 | 88 | 36480 |
| Bongro | city | Province of Ilocos Sur | Philippines | 17.8166667 | 120.4333333 | 22 | 37587 |
| Bongro | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4333333 | 72 | 54751 |
| Bongtolan | city | Province of Ilocos Sur | Philippines | 17.5666667 | 120.3833333 | 16 | 92225 |
| Borobor | city | Province of Ilocos Sur | Philippines | 17.65 | 120.4333333 | 19 | 54751 |
| Borono | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.4333333 | 147 | 30053 |
| Bossot | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.6 | 820 | 7653 |
| Bossot | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.6166667 | 1794 | 7122 |
| Bosug | city | Province of Ilocos Sur | Philippines | 17.5205556 | 120.4422222 | 160 | 58129 |
| Botarag | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.6 | 820 | 7653 |
| Botol | city | Province of Ilocos Sur | Philippines | 17.2630556 | 120.4211111 | 328 | 31043 |
| Buang | city | Province of Ilocos Sur | Philippines | 17.2375 | 120.5894444 | 882 | 7610 |
| Bucao | city | Province of Ilocos Sur | Philippines | 16.9333333 | 120.4333333 | 147 | 30053 |
| Bucnit | city | Province of Ilocos Sur | Philippines | 17.0808333 | 120.725 | 1335 | 3949 |
| Bugbuga | city | Province of Ilocos Sur | Philippines | 17.0919444 | 120.5180556 | 236 | 38398 |
| Bugnay | city | Province of Ilocos Sur | Philippines | 17.8166667 | 120.4333333 | 22 | 37587 |
| Bugui | city | Province of Ilocos Sur | Philippines | 17.25 | 120.55 | 656 | 13841 |
| Buguibog | city | Province of Ilocos Sur | Philippines | 17.15 | 120.5333333 | 104 | 37864 |
| Bul-bul-luacan | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.5 | 164 | 37864 |
| Bulag | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.3833333 | 16 | 92225 |
| Bulag | city | Province of Ilocos Sur | Philippines | 17.5902778 | 120.4261111 | 16 | 72043 |
| Bulag Este | city | Province of Ilocos Sur | Philippines | 17.5902778 | 120.4261111 | 16 | 72043 |
| Bulag Norte | city | Province of Ilocos Sur | Philippines | 17.5902778 | 120.4261111 | 16 | 72043 |
| Bulag Oeste | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.4166667 | 16 | 78350 |
| Bulag Sur | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.4166667 | 16 | 78350 |
| Bulala | city | Province of Ilocos Sur | Philippines | 17.5666667 | 120.3666667 | 16 | 62243 |
| Bulala | city | Province of Ilocos Sur | Philippines | 16.95 | 120.5666667 | 1817 | 12633 |
| Bulbulala | city | Province of Ilocos Sur | Philippines | 17.2666667 | 120.4333333 | 164 | 31043 |
| Bulbuluacan | city | Province of Ilocos Sur | Philippines | 17.1333333 | 120.5 | 164 | 37864 |
| Buliclic | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.45 | 45 | 35098 |
| Bungro | city | Province of Ilocos Sur | Philippines | 17.6333333 | 120.4333333 | 72 | 54751 |
| Buquig | city | Province of Ilocos Sur | Philippines | 17.5833333 | 120.4 | 16 | 92225 |
| Burgos | city | Province of Ilocos Sur | Philippines | 17.3333333 | 120.5 | 55 | 25605 |
| Busiing | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Busiing Centro | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Busiing Norte | city | Province of Ilocos Sur | Philippines | 17.6166667 | 120.3833333 | 16 | 82684 |
| Busiing Sur | city | Province of Ilocos Sur | Philippines | 17.6 | 120.3833333 | 16 | 82684 |
| Bussot | city | Province of Ilocos Sur | Philippines | 17.1166667 | 120.6166667 | 1794 | 7122 |
| Butac | city | Province of Ilocos Sur | Philippines | 16.95 | 120.6 | 1161 | 6221 |
| Butbutigui | city | Province of Ilocos Sur | Philippines | 16.9666667 | 120.6 | 1167 | 5579 |
| Butir | city | Province of Ilocos Sur | Philippines | 17.3666667 | 120.5 | 72 | 39420 |
| Butol | city | Province of Ilocos Sur | Philippines | 17.2630556 | 120.4211111 | 328 | 31043 |
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