[3] In 1254, the Governor of Bengal Malik Ikhtiyaruddin Iuzbak invaded the Azmardan Raj (present-day Ajmiriganj).

[4]In the 1800s, a Sufi saint who was stationed at the Ajmer Sharif Dargah of Moinuddin Chishti, migrated to modern-day Ajmiriganj.

[5] Ajmiriganj amalgamated Bir Charan Govt Pilot High School was established in 1930.

During the Bangladesh Liberation War of 1971, an eighteen hour long encounter between the freedom fighters and the Pakistan Army took place on 16 November.

Ajmiriganj had a literacy rate (age 7 and over) of 37.06%, compared to the national average of 51.8%, and a sex ratio of 1018 females per 1000 males.