| 1 | Barangay Rizal City of Santiago, Isabela | City of Santiago | Isabela | 14,030 |
| 2 | Barangay Rosario City of Santiago, Isabela | City of Santiago | Isabela | 12,466 |
| 3 | Barangay District I (Pob.) City of Cauayan, Isabela | City of Cauayan | Isabela | 11,670 |
| 4 | Barangay San Fermin City of Cauayan, Isabela | City of Cauayan | Isabela | 10,701 |
| 5 | Barangay Cataggaman Nuevo Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 9,797 |
| 6 | Barangay Ugac Sur Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 9,658 |
| 7 | Barangay Ugac Norte Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 9,119 |
| 8 | Barangay Roxas Solano, Nueva Vizcaya | Solano | Nueva Vizcaya | 9,088 |
| 9 | Barangay Batal City of Santiago, Isabela | City of Santiago | Isabela | 8,864 |
| 10 | Barangay Caggay Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 8,635 |
| 11 | Barangay Cabaruan City of Cauayan, Isabela | City of Cauayan | Isabela | 8,112 |
| 12 | Barangay Alibagu City of Ilagan, Isabela | City of Ilagan | Isabela | 8,057 |
| 13 | Barangay San Gabriel Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 7,984 |
| 14 | Barangay Imelda Bliss Village City of Ilagan, Isabela | City of Ilagan | Isabela | 7,961 |
| 15 | Barangay Maura Aparri, Cagayan | Aparri | Cagayan | 7,689 |
| 16 | Barangay Bugallon Proper (Pob.) Ramon, Isabela | Ramon | Isabela | 7,545 |
| 17 | Barangay Plaridel City of Santiago, Isabela | City of Santiago | Isabela | 7,526 |
| 18 | Barangay Linao East Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 7,421 |
| 19 | Barangay Caliguian (Pob.) Burgos, Isabela | Burgos | Isabela | 7,230 |
| 20 | Barangay Mabini City of Santiago, Isabela | City of Santiago | Isabela | 7,111 |
| 21 | Barangay Patul City of Santiago, Isabela | City of Santiago | Isabela | 6,728 |
| 22 | Barangay Hacienda Intal Baggao, Cagayan | Baggao | Cagayan | 6,710 |
| 23 | Barangay Pengue Tuguegarao City, Cagayan | Tuguegarao City | Cagayan | 6,605 |
| 24 | Barangay Quirino Solano, Nueva Vizcaya | Solano | Nueva Vizcaya | 6,572 |
| 25 | Barangay Salinungan West San Mateo, Isabela | San Mateo | Isabela | 6,460 |
| 26 | Barangay Baluarte City of Santiago, Isabela | City of Santiago | Isabela | 6,454 |
| 27 | Barangay Osmeña Solano, Nueva Vizcaya | Solano | Nueva Vizcaya | 6,403 |
| 28 | Barangay Rizal (Pob.) Roxas, Isabela | Roxas | Isabela | 6,340 |
| 29 | Barangay Sotero Nuesa Roxas, Isabela | Roxas | Isabela | 6,339 |
| 30 | Barangay Centro (Pob.) Santa Ana, Cagayan | Santa Ana | Cagayan | 6,263 |
| 31 | Barangay General Aguinaldo Ramon, Isabela | Ramon | Isabela | 6,257 |
| 32 | Barangay Sampaguita Solana, Cagayan | Solana | Cagayan | 6,208 |
| 33 | Barangay Naggasican City of Santiago, Isabela | City of Santiago | Isabela | 6,145 |
| 34 | Barangay Minante I City of Cauayan, Isabela | City of Cauayan | Isabela | 6,136 |
| 35 | Barangay San Miguel Ramon, Isabela | Ramon | Isabela | 6,049 |
| 36 | Barangay Paddad Alicia, Isabela | Alicia | Isabela | 6,037 |
| 37 | Barangay District III (Pob.) City of Cauayan, Isabela | City of Cauayan | Isabela | 6,022 |
| 38 | Barangay Calaocan City of Santiago, Isabela | City of Santiago | Isabela | 6,022 |
| 39 | Barangay Sagana City of Santiago, Isabela | City of Santiago | Isabela | 5,774 |
| 40 | Barangay Quezon Solano, Nueva Vizcaya | Solano | Nueva Vizcaya | 5,758 |
| 41 | Barangay Bugallon Norte Ramon, Isabela | Ramon | Isabela | 5,671 |
| 42 | Barangay Bantug (Pob.) Roxas, Isabela | Roxas | Isabela | 5,659 |
| 43 | Barangay Raniag Ramon, Isabela | Ramon | Isabela | 5,623 |
| 44 | Barangay Runruno Quezon, Nueva Vizcaya | Quezon | Nueva Vizcaya | 5,594 |
| 45 | Barangay Magsaysay Bayombong, Nueva Vizcaya | Bayombong | Nueva Vizcaya | 5,562 |
| 46 | Barangay Macanaya Aparri, Cagayan | Aparri | Cagayan | 5,472 |
| 47 | Barangay Catabayungan Cabagan, Isabela | Cabagan | Isabela | 5,456 |
| 48 | Barangay Bonfal West Bayombong, Nueva Vizcaya | Bayombong | Nueva Vizcaya | 5,367 |
| 49 | Barangay San Vicente Santa Ana, Cagayan | Santa Ana | Cagayan | 5,297 |
| 50 | Barangay Baretbet Bagabag, Nueva Vizcaya | Bagabag | Nueva Vizcaya | 5,280 |