Central region

  1. Kamphaeng Phet Province
  2. Chainat Province
  3. Nakhon Nayok Province
  4. Nakhon Pathom Province
  5. Nakhon Sawan Province
  6. Nonthaburi Province
  7. Pathum Thani Province
  8. Phra Nakhon Si Ayutthaya Province
  9. Phichit Province
  10. Phitsanulok Province
  11. Phetchabun Province
  12. Lopburi Province
  13. Samut Prakan Province
  14. Samut Songkhram Province
  15. Samut Sakhon Province
  16. Sing Buri Province
  17. Sukhothai Province
  18. Suphan Buri Province
  19. Saraburi Province
  20. Ang Thong Province
  21. Uthai Thani Province