As of January 2010
REGION XII
| PROVINCE / CITY / MUNICIPALITY | CITY | MUN | Established Precincts | Registered Voters | No. of Clustered Precincts | |
| REGIONAL TOTAL | 4 | 45 | 13,616 | 1,987,427 | 2,769 | |
| SARANGANI | 0 | 7 | 1,875 | 270,444 | 379 | |
| 1 | Alabel | x | 285 | 41,279 | 53 | |
| 2 | Glan | x | 417 | 56,881 | 85 | |
| 3 | Kiamba | x | 243 | 35,240 | 49 | |
| 4 | Maasim | x | 181 | 28,654 | 41 | |
| 5 | Maitum | x | 166 | 23,551 | 33 | |
| 6 | Malapatan | x | 234 | 35,569 | 43 | |
| 7 | Malungon | x | 349 | 49,270 | 75 | |
| NORTH COTABATO | 1 | 17 | 4,354 | 605,065 | 913 | |
| 1 | Alamada | x | 186 | 27,166 | 39 | |
| 2 | Aleosan | x | 124 | 17,036 | 28 | |
| 3 | Antipas | x | 101 | 14,037 | 20 | |
| 4 | Arakan | x | 156 | 22,548 | 38 | |
| 5 | Banisilan | x | 153 | 22,846 | 35 | |
| 6 | Carmen | x | 186 | 24,751 | 43 | |
| 7 | Kabacan | x | 270 | 39,591 | 58 | |
| 8 | Kidapawan City | x | 464 | 68,650 | 90 | |
| 9 | Libungan | x | 187 | 24,248 | 34 | |
| 10 | Magpet | x | 187 | 25,472 | 40 | |
| 11 | Makilala | x | 302 | 40,063 | 61 | |
| 12 | Matalam | x | 271 | 38,224 | 62 | |
| 13 | Midsayap | x | 428 | 60,858 | 94 | |
| 14 | M'Lang | x | 370 | 44,282 | 66 | |
| 15 | Pigkawayan | x | 238 | 30,219 | 50 | |
| 16 | Pikit | x | 376 | 52,162 | 76 | |
| 17 | President Roxas | x | 171 | 26,174 | 39 | |
| 18 | Tulunan | x | 184 | 26,738 | 40 | |
| SOUTH COTABATO | 2 | 10 | 4,790 | 733,566 | 935 | |
| 1 | Banga | x | 308 | 38,683 | 53 | |
| 2 | General Santos City | x | 1,716 | 303,994 | 347 | |
| 3 | Koronadal City | x | 564 | 83,560 | 106 | |
| 4 | Lake Sebu | x | 224 | 28,590 | 48 | |
| 5 | Norala | x | 176 | 23,867 | 34 | |
| 6 | Polomolok | x | 551 | 79,584 | 104 | |
| 7 | Santo Niño | x | 147 | 20,160 | 26 | |
| 8 | Surallah | x | 298 | 43,615 | 54 | |
| 9 | Tampakan | x | 145 | 20,495 | 31 | |
| 10 | Tantangan | x | 150 | 19,722 | 29 | |
| 11 | T'Boli | x | 271 | 39,704 | 56 | |
| 12 | Tupi | x | 240 | 31,592 | 47 | |
| SULTAN KUDARAT | 1 | 11 | 2,597 | 378,352 | 542 | |
| 1 | Bagumbayan | x | 235 | 30,996 | 56 | |
| 2 | Columbio | x | 119 | 18,805 | 30 | |
| 3 | Esperanza | x | 216 | 28,848 | 41 | |
| 4 | Isulan | x | 336 | 47,068 | 59 | |
| 5 | Kalamansig | x | 174 | 19,743 | 33 | |
| 6 | Lambayong (Mariano Marcos) | x | 200 | 34,708 | 47 | |
| 7 | Lebak | x | 253 | 42,328 | 58 | |
| 8 | Lutayan | x | 154 | 28,315 | 36 | |
| 9 | Palimbang | x | 228 | 37,816 | 55 | |
| 10 | President Quirino | x | 161 | 19,854 | 30 | |
| 11 | Sen. Ninoy Aquino | x | 344 | 46,980 | 61 | |
| 12 | Tacurong City | x | 177 | 22,891 | 36 | |
| POSTED: 04.12.2010 LTO, Updated: 01.24.12 JJSH |