1. To Hieu Ward - Established on the basis of merging 4 wards of Quyet Thang, To Hieu, Chieng Le, Quyet Tam. The headquarters is located at the old Son La City People's Committee.
2. Chieng An ward - Established on the basis of merging Chieng An ward, Chieng Xom commune, Chieng Den commune. The headquarters is located in the old Chieng Xom commune.
3. Chieng Coi Ward - Established on the basis of merging Chieng Coi Ward, Hua La Commune, Chieng Co Commune. The headquarters is located in the old Chieng Coi ward.
4. Chieng Sinh ward - Established on the basis of merging Chieng Sinh ward and Chieng Ngan commune. Headquarters located in the old Chieng Sinh ward
5. Moc Chau Ward - Established on the basis of merging Chieng Hac Commune, Moc Ly Ward, Muong Sang Ward. The headquarters is located in the old Moc Chau town.
6. Moc Son ward - Established on the basis of merging Moc Son ward and Dong Sang ward. The headquarters is located in the old Moc Son ward.
7. Van Son ward - Established on the basis of merging Binh Minh ward and Van Son ward. The headquarters is located in the old Van Son ward.
8. Thao Nguyen ward - Established on the basis of merging Thao Nguyen ward and Co Do ward. The headquarters is located in the old Thao Nguyen ward.
9. Doan Ket commune - Established on the basis of merging Doan Ket commune and Chieng Chung commune. The headquarters is located at the old Doan Ket.
10. Long Sap Commune - Established on the basis of merging Long Sap Commune and Chieng Khua Commune. The headquarters is located in the old Long Sap commune.
11. Chieng Son commune - Established on the basis of merging Chieng Son commune (Moc Chau town) and Chieng Xuan commune (Van Ho district). The headquarters is located in the old Chieng Son commune.
12. Van Ho commune - Established on the basis of merging Van Ho commune, Long Luong, Chieng Yen, Muong Men. The headquarters is located at the old Van Ho District People's Committee.
13. Song Khua commune - Established on the basis of merging Muong Te, Song Khua, Lien Hoa, Quang Minh communes. The headquarters is located in the old Song Khua commune.
14. To Mua commune - Established on the basis of merging Chieng Khoa, Suoi Bang, To Mua communes. Headquarters is located in the old To Mua commune
15. Xuan Nha commune - Established on the basis of merging Xuan Nha and Tan Xuan communes. The headquarters is located in the old Xuan Nha commune.
16. Quynh Nhai commune - Established on the basis of merging Muong Giang town and Chieng Bang, Chieng Khoang, Chieng On communes. The headquarters is located at the old Quynh Nhai District People's Committee.
17. Muong Chien commune - Established on the basis of merging Chieng Khay, Ca Nu, Muong Chien communes. The headquarters is located in the old Chieng Khay commune.
18. Muong Gion commune - Established on the basis of merging Muong Gion and Pa Ma Pha Khinh communes. The headquarters is located in the old Muong Gion commune.
19. Muong Sai commune - Established on the basis of merging Nam Es and Muong Sai communes. The headquarters is located in the old Muong Sai.
20. Thuan Chau commune - Established on the basis of merging Thuan Chau town and Phong Ly, Thom Mon, Tong Lanh, Chieng Pac communes. The headquarters is located at the old Thuan Chau District People's Committee.
21. Chieng La commune - Established on the basis of merging the communes: Chieng La, Chieng Ngam, Noong Lay, Tong Co. The headquarters is located in the old Noong Lay commune.
22. Nam Lau commune - Established on the basis of merging Chieng Bom, Pung Tra, Nam Lau communes. The headquarters is located in the old Pung Tra commune.
23. Muoi Noi commune - Established on the basis of merging Muoi Noi commune, Ban Lam, Bon Pheng. The headquarters is located in the old Muoi Noi commune.
24. Muong Khieng commune - Established on the basis of merging Liep Te, Bo Muoi, Muong Khieng communes. The headquarters is located in the old Muong Khieng commune.
25. Co Ma commune - Established on the basis of merging Co Ma, Co Tong, Pa Long communes. The headquarters is located in the old Co Ma commune.
26. Binh Thuan commune - Established on the basis of Phong Lai and Chieng Pha communes. The headquarters is located in the old Phong Lai commune.
27. Muong E commune - Established on the basis of Phong Lap and Muong E communes. The headquarters is located in the old Muong E commune.
28. Long He commune - Established on the basis of merging Long He and E Tong communes. The headquarters is located in the old Long He commune.
29. Muong La commune - Established on the basis of merging It Ong town and Nam Pham, Chieng San, Chieng Muon, Muong Trai, Pi Toong communes. The headquarters is located at the old Muong La District People's Committee.
30. Chieng Lao commune - Established on the basis of merging Nam Gion, Chieng Lao, Hua Trai communes. The headquarters is located in the old Chieng Lao commune.
31. Muong Bu commune - Established on the basis of merging 3 communes of Muong Chum, Ta Bu, Muong Bu. The headquarters is located in the old Muong Bu commune.
32. Chieng Hoa commune - Chieng Hoa was established on the basis of merging Chieng An, Chieng Cong, Chieng Hoa communes. The headquarters is expected to be located in the old Chieng Hoa commune.
33. Bac Yen commune - Established on the basis of merging Bac Yen town and Phieng Ban, Hong Ngai, Song Pe communes. The headquarters is located at the old Bac Yen District People's Committee.
34. Ta Xua commune - Established on the basis of merging Lang Cheu, Hang Dong, Ta Xua communes. The headquarters is located in the old Ta Xua commune.
35. Ta Khoa commune - Established on the basis of merging Muong Khoa, Hua Nhan, Ta Khoa communes. The headquarters is located in the old Muong Khoa commune.
36. Xim Vang Commune - Established on the basis of merging Hang Chu Commune and Xim Vang Commune. The headquarters is located in the old Hang Chu commune.
37. Pac Nga commune - Established on the basis of merging Pac Nga and Chim Van communes. The headquarters is located in the old Pac Nga commune.
38. Chieng Sai commune - Established on the basis of merging Phieng Con and Chieng Sai communes. The headquarters is located in the old Phieng Con commune.
39. Phu Yen commune - Established on the basis of merging Quang Huy town and Huy Ha, Huy Tuong, Huy Tan, Huy Thuong communes. The headquarters is located at the old Phu Yen District People's Committee.
40. Gia Phu commune - Established on the basis of merging Gia Phu, Tuong Phu, Suoi Bau, Sap Xa communes. Headquarters of the old Gia Phu commune.
41. Tuong Ha commune - Established on the basis of merging Tuong Thuong, Tuong Ha, Tuong Tien, Tuong Phong communes. The headquarters is located in the old Tuong Ha commune.
42. Muong Coi commune - Established on the basis of merging Muong Coi commune, Muong Thai, Tan Lang. The headquarters is located in the old Muong Coi commune.
43. Muong Bang commune - Established on the basis of merging Muong Do, Muong Lang, Muong Bang communes. The headquarters is located in the old Muong Do commune.
44. Tan Phong commune - Established on the basis of merging Bac Phong, Tan Phong, Nam Phong communes; headquartered in Tan Phong commune. The headquarters is located in the old Tan Phong commune.
45. Kim Bon commune - Established on the basis of merging Kim Bon commune and Da Do commune. Headquarters of the old Kim Bon weighing station.
46. Yen Chau commune - Established on the basis of merging Yen Chau town and Chieng Dong, Chieng Sang, Chieng Pan, Chieng Khoi, and Sup Vat communes. The headquarters is located at the old Yen Chau District People's Committee.
47. Chieng Hac commune - Established on the basis of merging Chieng Hac commune, Tu Nang, Muong Lam. The headquarters is located in the old Chieng Hac commune.
48. Long Phieng commune - Established on the basis of merging Long Phieng and Chieng Tuong communes. The headquarters is located in the old Long Phieng commune.
49. Yen Son commune - Established on the basis of merging Yen Son commune, Chieng On. The headquarters is located in the old Yen Son commune.
50. Chieng Mai commune - Established on the basis of merging Chieng Ban, Chieng Mai, Chieng Dong, Chieng Ve, Chieng Kheo communes. The headquarters is located in the old Chieng Mai commune.
51. Mai Son commune - Established on the basis of merging Hat Lot town with Hat Lot and Co Noi communes. The headquarters is located at the old Mai Son District People's Committee.
52. Phieng Pan commune - Established on the basis of merging Phieng Pan, Na At, Chieng Luong communes. The headquarters is located in the old Phieng Pan commune.
53. Chieng Mung commune - Established on the basis of merging Chieng Mung, Muong Bang, Muong Bon communes. The headquarters is located in the old Chieng Mung commune.
54. Phieng Cam commune - Established on the basis of merging Chieng Noi and Phieng Cam communes. The headquarters is located in the old Phieng Cam commune.
55. Muong Chanh commune - Established on the basis of merging Muong Chanh and Chieng Chung communes. The headquarters is located in the old Muong Chanh commune.
56. Ta Hoc commune - Established on the basis of merging Na Bo and Ta Hoc communes. The headquarters is located in the old Na Bo commune.
57. Chieng Sung commune - Established on the basis of merging Chieng Sung and Chieng Chan communes. The headquarters is located in the old Chieng Sung commune.
58. Bo Sinh commune - Established on the basis of merging Bo Sinh commune, Pu Bau, Chieng En. The headquarters is located in the old Bo Sinh commune.
59. Chieng Khuong commune - Established on the basis of merging Chieng Khuong and Muong Sai communes. The headquarters is located in the old Chieng Khuong commune.
60. Muong Hung commune - Established on the basis of merging Chieng Cang and Muong Hung communes. The headquarters is located in the old Muong Hung commune.
61. Chieng Khoong commune - Established on the basis of merging Muong Cai commune and Chieng Khoong commune. The headquarters is located in the old Chieng Khoong commune.
62. Muong Lam commune - Established on the basis of merging Muong Lam and Dua Mon communes. The headquarters is located in the old Muong Lam commune.
63. Nam Ty commune - Established on the basis of merging Nam Ty and Chieng Phung communes. The headquarters is located in the old Nam Ty commune.
64. Song Ma commune - Established on the basis of merging Song Ma town and Na Nghiu commune. The headquarters is located at the old Song Ma District People's Committee.
65. Huoi Mot commune - Established on the basis of merging Huoi Mot commune and Nam Man commune. The headquarters is located in the old Huoi Mot commune.
66. Chieng So commune - Established on the basis of merging Yen Hung and Chieng So communes. Headquarters in the old Chieng So commune.
67. Sop Cop commune - Established on the basis of merging Sop Cop commune, Muong Va, Nam Lanh. Headquarters at the old Sop Cop District People's Committee.
68. Pung Banh commune - Established on the basis of merging Dam Cang, Pung Banh, Sam Kha communes. Headquarters in the old Pung Banh commune.
69. Muong Lan Commune - Keeping the unincorporated area.
70. Phieng Khoai Commune - Keeping the unincorporated area.
71. Suoi To commune - Keep it unmerged.
72. Ngoc Chien Commune - Keep the unmerged.
73. Tan Yen Commune - Keep the non-merged.
74. Muong Bam Commune - Keeping the unincorporated area.
75. Muong leo Commune - Keep the unincorporated area.
