District level · ceased operating on 7/1/2025

Thị xã Sơn Tây

The 13 communes, wards and towns of Thị xã Sơn Tây were reorganised into 3 new commune-level units.

New unit	From former units of Thị xã Sơn Tây
Phường Sơn Tây	Phường Ngô Quyền, Phường Phú Thịnh, Phường Sơn Lộc, Xã Đường Lâm, Phường Viên Sơn, Phường Trung Hưng
Phường Tùng Thiện	Phường Xuân Khanh, Xã Xuân Sơn, Xã Thanh Mỹ, Phường Trung Sơn Trầm
Xã Đoài Phương	Xã Kim Sơn, Xã Sơn Đông, Xã Cổ Đông

A new unit may also include communes from other districts.

Legal basis

Commune level

1656/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