[1] In late Western Han, it administered 15 counties: Qiansheng (千乘), Dongzou (東鄒), Shiwo (溼沃), Ping'an (平安), Bochang (博昌), Liaocheng (蓼城), Jianxin (建信), Di (狄), Langhuai (琅槐), Le'an (樂安), Beiyang (被陽), Gaochang (高昌), Fan'an (繁安), Gaowan (高宛) and Yanxiang (延鄉).
[2] In 60 AD, Qiansheng became the fief of Liu Jian (劉建), a son of Emperor Ming, who died the next year without issue.
Kang's grandson Hong (鴻) was the father of Emperor Zhi.
After the latter's accession to the throne, Hong was gifted a richer territory, Bohai, as his new fief, and Le'an was converted back to an imperial commandery.
[3] By 140 AD, the number of counties and marquessates in Le'an had decreased to 9: Linji (臨濟, formerly Di), Qiansheng, Gaowan (高菀), Le'an, Bochang, Liaocheng, Li (利), Yi (益), and Shouguang (壽光).