District level · ceased operating on 7/1/2025

Huyện Si Ma Cai

The 10 communes, wards and towns of Huyện Si Ma Cai were reorganised into 3 new commune-level units.

New unit	From former units of Huyện Si Ma Cai
Xã Si Ma Cai	Xã Nàn Sán, Thị trấn Si Ma Cai, Xã Sán Chải, Xã Cán Cấu, Xã Quan Hồ Thẩn
Xã Sín Chéng	Xã Thào Chư Phìn, Xã Bản Mế, Xã Sín Chéng, Xã Nàn Xín
Xã Lùng Phình	Xã Lùng Thẩn

A new unit may also include communes from other districts.

Legal basis

Commune level

1673/NQ-UBTVQH15

Adopted 6/16/2025; new commune government operating from 7/1/2025

Number checked, full text pending

Province level

NQ 202/2025/QH15

Adopted 12 June 2025; new province operating from 7/1/2025

District level

Ceased operating

From 7/1/2025 under Resolution 203/2025/QH15 amending the Constitution