Jiang is an ancient, multi-ethnic and multi-source surname. In the Song Dynasty, there were more than 260,000 people surnamed Jiang, accounting for 0.34% of the national population, ranking 6 1. Jiangsu is the largest province with Jiang surname, accounting for about 22.6% of the total population of Jiang surname in China. In the Ming Dynasty, there were about 490,000 people surnamed Jiang, accounting for 0.53% of the national population, ranking 43rd.

There's a Zu:

Jiang Boling, Ji Fa, a native of Zhou Wuwang, founded the Zhou Dynasty after eliminating the dissolute Shang Zhouwang, and died shortly after his reign. Zhou Chengwang inherited him. Because he became a young king and a regent, he helped him put down the rebellion of his son Wu Geng, established laws and regulations, and constantly enfeoffed princes with the same surname, among which his third son Boling was sealed in Jiang (now Huaibin County, Henan Province, formerly Gushi Town, Henan Province)

In 6 17 BC, Jiang Guo was destroyed by Chu, and later generations took the country name as their surname, and respected Jiang Boling as the ancestor of Jiang.