Administrative divisions of Ilocos Sur

The province of Ilocos Sur is politically subdivided into 32 towns and 2 component cities, all of which are organized into two legislative districts.[1] There are a total of 768 barangays in the province.[2]

City or Town [A] District[1] Population (2010)[1][2] Area[1] Density Brgy. Coordinates[B] km2 sq mi /km2 /sq mi Alilem 2nd 1.0% 6,640 119.33 46.07 56 150 9 16°53′13″N 120°31′48″E Banayoyo 2nd 1.2% 7,694 24.63 9.51 310 800 14 17°14′09″N 120°28′47″E Bantay 1st 5.2% 34,323 76.60 29.58 450 1,200 34 17°34′54″N 120°23′11″E Burgos 2nd 1.8% 11,679 44.38 17.14 260 670 26 17°18′58″N 120°30′33″E Cabugao 1st 5.4% 35,706 95.56 36.90 370 960 33 17°47′33″N 120°27′21″E Candon ∗ 2nd 8.8% 57,884 103.28 39.88 560 1,500 42 17°11′22″N 120°26′51″E Caoayan 1st 2.8% 18,551 17.42 6.73 1,100 2,800 17 17°32′52″N 120°23′00″E Cervantes 2nd 2.5% 16,573 234.70 90.62 71 180 13 16°59′24″N 120°44′07″E Galimuyod 2nd 1.5% 10,011 34.40 13.28 290 750 24 17°10′59″N 120°28′07″E Gregorio del Pilar (Concepcion) 2nd 0.6% 4,219 41.66 16.09 100 260 7 17°08′53″N 120°36′39″E Lidlidda 2nd 0.7% 4,398 33.84 13.07 130 340 11 17°15′07″N 120°31′15″E Magsingal 1st 4.3% 28,302 84.98 32.81 330 850 30 17°41′06″N 120°25′33″E Nagbukel 2nd 0.7% 4,938 43.12 16.65 110 280 12 17°26′48″N 120°31′34″E Narvacan 2nd 6.5% 42,803 122.21 47.19 350 910 34 17°25′10″N 120°28′37″E Quirino (Angkaki) 2nd 1.3% 8,535 240.10 92.70 36 93 9 17°08′12″N 120°40′35″E Salcedo (Baugen) 2nd 1.7% 10,935 103.44 39.94 110 280 21 17°09′03″N 120°32′10″E San Emilio 2nd 1.1% 7,427 141.44 54.61 53 140 8 17°14′19″N 120°34′44″E San Esteban 2nd 1.2% 8,072 19.62 7.58 410 1,100 10 17°19′47″N 120°26′42″E San Ildefonso 1st 1.1% 7,075 11.35 4.38 620 1,600 15 17°37′30″N 120°23′35″E San Juan (Lapog) 1st 3.8% 25,199 64.37 24.85 390 1,000 32 17°44′32″N 120°27′30″E San Vicente 1st 1.8% 11,720 12.60 4.86 930 2,400 7 17°35′39″N 120°22′22″E Santa 2nd 2.3% 15,106 109.10 42.12 140 360 26 17°29′10″N 120°26′04″E Santa Catalina 1st 2.1% 13,597 9.68 3.74 1,400 3,600 9 17°35′20″N 120°21′48″E Santa Cruz 2nd 5.8% 37,911 88.78 34.28 430 1,100 49 17°05′04″N 120°27′07″E Santa Lucia 2nd 3.8% 24,981 49.72 19.20 500 1,300 36 17°07′02″N 120°26′53″E Santa Maria 2nd 4.3% 28,597 63.31 24.44 450 1,200 33 17°22′03″N 120°28′51″E Santiago 2nd 2.7% 17,958 46.36 17.90 390 1,000 24 17°17′38″N 120°26′43″E Santo Domingo 1st 4.2% 27,596 55.49 21.42 500 1,300 36 17°38′16″N 120°24′36″E Sigay 2nd 0.4% 2,419 81.55 31.49 30 78 7 17°02′34″N 120°34′46″E Sinait 1st 3.9% 25,427 65.56 25.31 390 1,000 44 17°51′59″N 120°27′22″E Sugpon 2nd 0.6% 3,820 57.11 22.05 67 170 6 16°49′38″N 120°29′45″E Suyo 2nd 1.6% 10,622 124.00 47.88 86 220 8 16°58′33″N 120°31′30″E Tagudin 2nd 5.8% 38,122 151.19 58.37 250 650 43 16°56′04″N 120°26′42″E Vigan † 1st 7.6% 49,747 25.12 9.70 2,000 5,200 39 17°34′22″N 120°23′12″E Total 658,587 2,596.00 1,002.32 250 650 768 (see GeoGroup box) ^ Former names are italicized. ^ Coordinates mark the city/town center, and are sortable by latitude.