The modern prefecture-level city Changzhou, created in 1949, retains its name.
Geography
The administrative region of Chang Prefecture in the Tang dynasty was in modern southern Jiangsu directly to the north of Lake Tai. It probably includes parts of modern:
Shi Weile, ed. (2005). Zhongguo Lishi Diming Da Cidian (中国历史地名大词典) [Large Dictionary of Chinese Historical Place Names] (in Chinese). China Social Sciences Press. p. 2339. ISBN7-5004-4929-1.