It is commonly found in Vietnam among its Chinese diaspora.

Individuals with the surname, Triệu, likely migrated to Vietnam from the Guangdong and Fujian Provinces of China.

Zhao was listed as one of the most common names in China along with Wang, Li, Zhang, Liu, Chen, Yang, Huang, Zhou, and Wu.

However, families with the surname "Zhao" that migrated to Vietnam and changed their name to "Triệu" are rare, estimated as 0.16% of the population in Vietnam and 0.001% of the population in the United States.

Trieu is the anglicized variation of the surname Triệu.