District level · ceased operating on 7/1/2025

Thị xã Mường Lay

The 3 communes, wards and towns of Thị xã Mường Lay were reorganised into 1 new commune-level units.

New unit	From former units of Thị xã Mường Lay
Phường Mường Lay	Phường Sông Đà, Phường Na Lay, Xã Lay Nưa

A new unit may also include communes from other districts.

Legal basis

Commune level

1661/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