A district-level town (Vietnamese: thị xã) is a type of second tier subdivision of Vietnam.
In Vietnam, there are other kinds of district-level urban subdivision: urban districts (Vietnamese: quận), districts (huyện), municipal city (thành phố thuộc thành phố trực thuộc trung ương) and provincial cities (thành phố thuộc tỉnh).
Main economical activities in town included industry, services and business.
But the district-level town can also be downgraded to a district capitals, especially when there is a merger of the provinces.
Some district-level towns were downgraded into commune-level towns for some time and then be re-established, as Nghĩa Lộ, Bắc Cạn, Đồ Sơn (from 2007, became urban district of Đồ Sơn), Phúc Yên, Hà Tiên, Vị Thanh, Gia Nghĩa.