| # | Municipality/ City | No. of Barangays | District |
| 1. | Municipality of Angat | 16 | 3rd Congressional District |
| 2. | Municipality of Balagtas | 9 | 2nd Congressional District |
| 3. | Municipality of Baliwag | 27 | 2nd Congressional District |
| 4. | Municipality of Bocaue | 19 | 2nd Congressional District |
| 5. | Municipality of Bulakan | 14 | 1st Congressional District |
| 6. | Municipality of Bustos | 14 | 2nd Congressional District |
| 7. | Municipality of Calumpit | 29 | 1st Congressional District |
| 8. | Municipality of Dona Remedios Trinidad | 8 | 3rd Congressional District |
| 9. | Municipality of Guiguinto | 14 | 2nd Congressional District |
| 10. | Municipality of Hagonoy | 26 | 1st Congressional District |
| 11. | City of Malolos | 51 | 1st Congressional District |
| 12. | Municipality of Marilao | 16 | 4th Congressional District |
| 13. | City of Meycauayan | 26 | 4th Congressional District |
| 14. | Municipality of Norzagaray | 13 | 3rd Congressional District |
| 15. | Municipality of Obando | 11 | 4th Congressional District |
| 16. | Municipality of Pandi | 22 | 2nd Congressional District |
| 17. | Municipality of Paombong | 14 | 1st Congressional District |
| 18. | Municipality of Plaridel | 19 | 2nd Congressional District |
| 19. | Municipality of Pulilan | 19 | 1st Congressional District |
| 20. | Municipality of San Ildefonso | 36 | 3rd Congressional District |
| 21. | City of San Jose Del Monte | 59 | Lone District of San Jose Del Monte City |
| 22. | Municipality of San Miguel | 49 | 3rd Congressional District |
| 23. | Municipality of San Rafael | 34 | 3rd Congressional District |
| 24. | Municipality of Santa Maria | 24 | 4th Congressional District |