The province of Ilocos Sur has 768 barangays comprising its 32 towns and 2 cities.
Barangays
Barangay Population City orTown 2010 2007 2000 1995 1990 Abaccan 233 273 255 276 237 Sigay Abaya 313 298 287 234 242 Galimuyod Abuor 1,049 990 874 816 824 Narvacan Ag-agrao 1,007 1,063 912 874 878 Santa Maria Ag-aguman 653 601 624 497 483 Tagudin Aggay 743 764 718 654 716 Bantay Aguing 308 323 329 304 317 Sinait Al-aludig 828 762 729 673 667 Santiago Alangan 632 639 518 432 348 Magsingal Alfonso (Tangaoan) 964 882 828 757 695 Gregorio del Pilar Alilem Daya (Poblacion) 1,418 1,516 1,422 1,177 1,251 Alilem Alinaay 812 730 611 532 481 Cabugao Alincaoeg 537 468 479 379 425 Santa Lucia Allangigan Primero 1,114 1,177 1,132 995 895 Candon Allangigan Segundo 1,054 1,026 921 840 782 Candon Aluling 1,263 1,149 1,109 1,003 892 Cervantes Amarao 515 506 476 420 423 Santa Cruz Ambalayat 1,926 1,691 1,636 1,484 1,612 Tagudin Ambucao 1,485 1,409 1,249 1,096 964 Santiago Ambugat 379 380 364 301 324 Burgos Ambulogan 1,352 1,322 1,302 1,287 1,285 Narvacan Amguid 703 696 610 559 493 Candon Amilongan 491 476 389 237 232 Alilem Ampandula 669 561 541 536 531 Santa Ampuagan 546 553 566 469 437 Santa Maria An-annam 1,405 1,225 1,124 1,004 946 Bantay Anaao 783 693 760 649 636 Alilem Angkileng 777 743 692 668 687 Santa Lucia Anonang Mayor 1,011 927 819 782 770 Caoayan Anonang Menor 872 895 701 671 608 Caoayan Ansad 640 631 654 604 669 San Esteban Apang 484 400 458 392 309 Alilem Apatot 1,644 1,504 1,278 1,165 1,054 San Esteban Apaya 529 469 480 425 432 Alilem Aquib 889 892 905 746 789 Narvacan Aragan 787 724 725 682 684 Cabugao Arangin 349 340 266 263 293 Santa Lucia Arnap 1,116 1,034 873 808 750 Cabugao Arnap 247 224 211 177 146 San Ildefonso Asilang 257 226 232 251 225 San Juan (Lapog) Atabay 312 319 328 363 321 Salcedo (Baugen) Ayudante 1,060 1,062 994 868 844 Candon Ayusan (Poblacion) 1,132 1,104 1,064 947 859 Santa Lucia Ayusan Norte 2,966 2,446 1,997 1,366 1,195 Vigan Ayusan Sur 930 925 810 764 629 Vigan Baballasioan 760 615 699 630 720 Santa Maria Babayoan 579 521 461 399 432 Santa Cruz Bacar 545 462 504 489 449 Magsingal Baclig (Poblacion) 2,268 2,268 1,982 1,775 1,647 Cabugao Bacsayan 482 489 430 353 371 Santa Cruz Bacsil 1,063 946 996 946 922 San Juan (Lapog) Bagani Camposanto 1,962 1,915 1,658 1,566 1,356 Candon Bagani Gabor 639 570 428 388 335 Candon Bagani Tocgo 527 498 431 384 361 Candon Bagani Ubbog 1,391 1,335 1,133 984 912 Candon Bagar 1,311 1,302 1,200 1,066 1,077 Candon Bagbagotot 414 377 329 276 266 Banayoyo Baggoc 668 748 705 746 677 Caoayan Bahet 843 766 548 534 463 San Ildefonso Balaleng 2,724 2,617 2,389 2,099 2,199 Bantay Balaweg 540 553 502 438 376 Nagbukel Balbalayang (Poblacion) 1,311 1,178 1,245 1,053 889 Sugpon Balidbid 1,161 1,149 1,096 1,071 945 Salcedo (Baugen) Balingaoan 1,545 1,432 1,372 1,126 1,307 Candon Baliw 758 562 664 546 547 San Juan (Lapog) Baliw 193 193 175 152 148 Sinait Baliw Daya 420 395 407 366 345 Santa Maria Baliw Laud 703 553 535 495 481 Santa Maria Ballaigui (Poblacion) 659 643 666 634 689 Sinait Baluarte 632 671 630 586 548 Salcedo (Baugen) Balugang 468 480 483 402 431 Burgos Banaoang 393 419 352 359 313 Bantay Banaoang 568 565 549 546 601 Santa Banay 473 444 425 349 353 Santa Cruz Banbanaal 667 575 497 490 462 Banayoyo Banbanaba 527 472 474 399 440 Santa Lucia Bandril 415 384 411 324 322 Nagbukel Banga 752 1,149 665 543 476 Sugpon Bangbangar 292 253 273 246 243 Burgos Banglayan 1,091 1,037 958 837 784 Narvacan Bani 604 496 500 455 433 Santa Lucia Bannuar (Poblacion) 1,248 1,225 1,161 1,131 1,012 San Juan (Lapog) Banoen 646 584 629 614 658 Quirino (Angkaki) Bantaoay 1,566 1,790 1,598 1,473 1,477 San Vicente Bantay Abot 790 743 667 622 – Narvacan Bantugo 651 650 648 568 526 Nagbukel Banucal 693 684 693 574 563 Lidlidda Bao-as 658 634 546 537 534 Santa Lucia Baracbac 260 306 276 273 254 Galimuyod Baracbac 775 637 712 660 718 Sinait Baracbac 938 815 773 675 602 Tagudin Barangay 1 (Poblacion) 622 684 645 510 532 Bantay Barangay 2 (Poblacion) 727 793 771 770 854 Bantay Barangay 3 (Poblacion) 1,008 960 851 743 514 Bantay Barangay 4 (Poblacion) 925 1,020 963 985 904 Bantay Barangay 5 (Poblacion) 732 813 826 751 679 Bantay Barangay 6 (Poblacion) 477 519 544 503 502 Bantay Barangay I (Poblacion) 570 742 891 1,136 1,279 Vigan Barangay II - Amianance (Poblacion) 616 590 744 817 792 Vigan Barangay III (Poblacion) 1,427 1,393 1,812 1,813 1,571 Vigan Barangay IV - Solid West (Poblacion) 2,239 1,876 2,379 2,359 2,231 Vigan Barangay IX - Cuta (Poblacion) 2,502 2,150 2,045 2,240 2,158 Vigan Barangay V - Pagpartian (Poblacion) 787 681 820 1,029 852 Vigan Barangay VI - Pagpandayan (Poblacion) 1,294 1,247 1,038 1,018 1,011 Vigan Barangay VII - Pagburnayan (Poblacion) 1,409 1,674 2,890 1,960 1,361 Vigan Barangay VIII - Cabasaan/Santa Elena (Poblacion) 1,557 1,427 1,434 1,496 1,323 Vigan Barangobong (Poblacion) 1,054 876 933 925 851 Santa Lucia Barbar 1,454 1,470 1,437 1,243 1,346 San Juan (Lapog) Barbarit 844 707 690 636 586 Magsingal Barikir 455 445 417 390 357 Sinait Baringcucurong 1,511 1,585 1,396 1,212 1,086 Suyo Bario-an 601 565 551 527 499 Tagudin Baritao 606 511 478 372 372 Tagudin Barraca 289 286 260 287 255 Vigan Basug 274 226 264 271 277 Santa Batbato 543 464 456 408 392 Alilem Bateria 477 460 377 350 332 San Esteban Bato 443 413 436 397 376 Cabugao Battog 506 487 465 445 385 Sinait Baybayabas 551 463 439 431 390 Santiago Baybayading 230 228 264 248 259 Salcedo (Baugen) Bayubay Norte 1,189 1,219 1,127 1,056 986 San Vicente Bayubay Sur 1,473 1,394 1,200 1,041 891 San Vicente Bayugao Este 341 256 321 261 247 Santa Cruz Bayugao Oeste 576 593 491 408 445 Santa Cruz Becques 1,855 1,876 1,862 1,620 1,626 Tagudin Beddeng Daya 566 484 449 392 358 Vigan Beddeng Laud 934 589 666 573 487 Vigan Belen 133 123 117 112 64 San Ildefonso Bequi-Walin 529 408 432 394 365 Lidlidda Besalan 996 974 972 892 902 Santa Cruz Bessang 392 361 412 357 365 Burgos Bia-o 548 548 475 403 377 Santa Maria Bidbiday 765 770 713 646 545 Galimuyod Bigbiga 585 595 555 527 482 Santiago Bimmanga 908 781 769 663 686 Tagudin Binacud 298 285 273 284 270 Sinait Binalayangan 285 277 273 261 239 Santo Domingo Binongan 699 613 602 565 509 Santo Domingo Bio 990 939 1,201 1,006 837 Tagudin Bisangol 209 221 225 187 191 Banayoyo Bitalag 1,124 1,070 1,089 1,010 1,049 Tagudin Bitong 214 236 224 186 174 Galimuyod Boguibog 771 825 768 776 722 Salcedo (Baugen) Bongtolan 676 476 508 650 508 Vigan Bonifacio (Poblacion) 1,383 1,299 1,339 1,296 1,329 Cabugao Borobor 278 284 213 203 182 Galimuyod Borobor 484 489 508 516 424 Santo Domingo Borono 894 871 835 734 685 Tagudin Bucalag 208 167 333 313 306 Santa Bucao East 261 226 218 223 168 Tagudin Bucao West 394 418 339 313 282 Tagudin Bugbuga 642 688 583 547 449 Santa Cruz Bugnay 856 770 803 785 754 Candon Bugui 235 185 252 215 225 Lidlidda Bulag 2,412 2,377 2,348 2,291 2,073 Bantay Bulala 2,000 1,762 1,523 1,421 1,338 Vigan Bulala-Leguey 286 231 293 288 249 Salcedo (Baugen) Bulanos 940 951 867 766 717 Narvacan Bulbulala 501 522 496 424 468 Santiago Buliclic 395 419 399 411 363 Santa Lucia Bungro 402 373 339 380 330 Cabugao Bungro 1,367 1,275 1,053 845 840 Magsingal Bungro 650 638 549 507 458 San Ildefonso Buquig 842 856 667 648 433 Bantay Burgos (Poblacion) 487 531 456 441 453 Santa Lucia Busel-busel 458 450 380 345 320 Santiago Busiing Norte 761 661 521 455 407 San Ildefonso Busiing Sur 546 456 432 394 394 San Ildefonso Bussot 406 431 385 390 295 Gregorio del Pilar Butir 733 713 624 592 624 Santa Maria Butol 1,000 949 928 908 854 Santiago Cabalangegan 586 537 465 398 421 Vigan Cabalanggan 691 633 479 444 397 Bantay Cabangaran 291 286 327 299 294 Santa Cabanglotan 917 921 760 742 661 San Juan (Lapog) Cabangtalan 476 443 460 413 437 Sinait Cabarambanan 402 410 417 354 324 Sinait Cabaritan 460 452 445 416 426 Santa Lucia Cabaritan 1,020 965 901 820 677 Santo Domingo Cabaroan 716 701 589 572 539 Bantay Cabaroan 566 519 512 491 517 Magsingal Cabaroan 842 830 785 736 663 San Esteban Cabaroan 1,260 1,163 1,197 1,092 1,046 Santa Catalina Cabaroan 1,413 1,209 1,239 1,123 1,036 Santa Maria Cabaroan 761 585 546 427 425 Tagudin Cabaroan (Poblacion) 1,135 1,008 – 859 777 San Emilio Cabaroan Daya 958 831 733 901 683 Vigan Cabaroan Laud 475 480 442 452 380 Vigan Cabcaburao 481 432 431 396 376 Burgos Cabigbigaan 607 570 533 488 408 Santo Domingo Cabittaogan 2,590 2,574 2,271 2,193 2,128 Santa Catalina Cabugao 1,144 1,227 1,019 991 890 Suyo Cabugbugan 878 829 916 763 742 Tagudin Cabulalaan 359 316 347 357 351 Sinait Cabulanglangan 509 448 464 423 432 Tagudin Cabuloan 1,326 1,352 1,267 1,174 1,219 Santa Catalina Caburao 1,332 1,202 1,071 995 1,015 Santiago Cabusligan 715 681 640 566 542 Bantay Cacadiran 841 725 687 620 585 Cabugao Cacandongan 314 287 262 291 267 San Juan (Lapog) Cadacad 356 332 318 282 257 Burgos Cadacad 223 189 235 221 228 Nagbukel Cadacad 717 650 670 657 608 Narvacan Cadanglaan 235 223 198 177 186 Banayoyo Cadanglaan 182 142 129 109 88 Magsingal Cadanglaan 347 377 359 358 358 Sinait Caellayan 1,057 1,037 1,037 1,041 965 Cabugao Cagayungan 1,201 1,181 987 946 1,037 Narvacan Calangcuasan 956 905 845 833 711 Salcedo (Baugen) Calanutian 575 515 500 476 436 Sinait Calaoaan 2,363 2,382 2,062 1,842 1,661 Candon Calaoaan 1,443 1,379 1,290 1,222 1,144 Santa Cruz Calautit 1,014 953 930 861 770 Santo Domingo Calay-ab 823 720 690 598 546 Santo Domingo Calimugtong 458 479 386 340 340 Galimuyod Calingayan 262 258 244 233 211 Sinait Callaguip 939 1,046 1,055 929 822 Caoayan Callitong 547 540 515 485 487 Burgos Calongbuyan 2,603 2,508 2,150 1,693 1,801 Candon Calongbuyan 563 598 550 546 527 Galimuyod Calumbaya 234 211 169 176 175 Galimuyod Calungboyan 498 483 424 400 382 Santa Calungbuyan 220 140 192 140 150 Lidlidda Camangaan 862 719 783 768 579 Vigan Camanggaan 566 528 511 477 416 San Juan (Lapog) Camanggaan 1,116 1,140 1,069 940 882 Santa Cruz Camarao 1,244 1,214 1,138 1,040 948 Narvacan Camestizoan 989 956 763 713 638 Santo Domingo Camindoroan 808 843 777 703 651 San Juan (Lapog) Candalican 489 403 430 287 303 Santa Cruz Caoayan 568 562 654 659 585 Sugpon Capangdanan 851 835 714 579 533 Bantay Capangpangan 1,637 1,490 1,416 1,236 1,182 Vigan Caparacadan 351 370 316 277 271 Caoayan Capariaan 1,525 1,416 1,388 1,330 1,331 Santa Cruz Cappa-cappa 770 780 641 588 599 San Esteban Caraisan 691 697 581 561 575 Magsingal Carcarabasa 354 297 280 275 217 Lidlidda Caronoan 679 604 585 509 491 San Juan (Lapog) Carusipan 563 498 571 495 562 Cabugao Casiber 629 548 529 455 471 Santa Casilagan 299 272 255 238 203 Nagbukel Casilagan 627 673 602 591 576 Narvacan Casilagan 731 686 721 594 576 Santa Cruz Casilagan Norte 568 503 471 409 436 Banayoyo Casilagan Sur 447 423 371 314 338 Banayoyo Casili 374 378 374 338 308 Santo Domingo Casocos 202 183 157 148 138 Nagbukel Catayagan 763 716 669 563 538 Santa Lucia Caterman 2,423 2,311 2,031 1,905 1,752 Candon Catucdaan 907 814 799 784 787 Cabugao Cayus 739 706 546 555 469 Quirino (Angkaki) Codoog 875 877 777 723 749 Narvacan Comillas North 1,819 1,567 1,587 1,471 1,154 Cervantes Comillas South 1,598 1,288 1,326 1,311 1,159 Cervantes Concepcion 718 793 732 709 570 Gregorio del Pilar Concepcion (Poblacion) 1,655 1,426 1,209 1,138 1,041 Cervantes Conconig East 1,301 1,184 1,095 1,008 979 Santa Lucia Conconig West 864 824 690 558 594 Santa Lucia Coscosnong 482 436 406 332 359 Santa Cruz Cuancabal 916 907 818 686 606 Cabugao Cuantacla 729 672 656 588 517 Cabugao Cubcubboot 472 499 413 370 323 Candon Culiong 304 270 274 255 230 Salcedo (Baugen) Curtin 346 352 325 334 326 Sinait Daclapan 2,150 1,981 1,719 1,494 1,438 Cabugao Dacutan 682 630 575 508 506 Magsingal Dacutan 525 460 453 392 377 Tagudin Dadalaquiten Norte 782 784 747 731 711 Sinait Dadalaquiten Sur 717 721 789 787 781 Sinait Daddaay 686 614 657 629 592 Alilem Dalawa 1,248 1,172 1,284 1,159 1,077 Alilem Daldagan 390 446 360 339 305 Galimuyod Daligan 515 523 502 492 458 Santa Cruz Damacuag 821 969 823 769 7