On 29 March 1971, days after the start of the Bangladesh Liberation War, people of Munshiganj raided the armoury and captured arms and ammunition, which they used to resist the Pakistan Army.

The people of Narayanganj and Munshiganj together resisted an attack of the Pakistan Army on 31 March.

Munshiganj Sadar had a literacy rate (age 7 and over) of 55.17%, compared to the national average of 51.8%, and a sex ratio of 970 females per 1000 males.

It consists of 6 upazilas, 67 union parishads, 662 mouzas, 906 villages, 18 wards, 73 mahallas and 2 municipalities.

[9] Munshiganj Sadar Upazila is divided into Mirkadim Municipality, Munshiganj Municipality, and nine union parishads: Adhara, Bajrajogini, Banglabazar, Charkewar, Mohakali, Mollakandi, Panchashar, Rampal, and Shiloy.