Ou 歐 is listed 361st in the Song dynasty classic text Hundred Family Surnames.
[2] Most recently, by using the 2010 China census data and statistical analysis data that included random sampling from Taiwan, Hong Kong and Macau, the Fuxi Culture Research Association ranked the surname 区/區 291st most common in China, shared by around 199,000 people (0.015% of the Chinese population) with the largest concentration of holders in Guangdong province.
[5] The Ou (歐) and Ouyang are considered to both descend from the ruling family of the state of Yue during the Spring and Autumn period.
[citation needed] With the 區 variant being descendants of Ou An (歐安), a wealthy and charitable merchant who came to the attention of Emperor Jing of Han, who ordered that Ou An do without the radical 'qian' (欠) from 歐, a character that means 'to owe'.
have their ancestral roots in the Longgang, Zhongshan, Shunde, Panyu, and Xinhui areas of Guangdong.