The famous Bengali poet Kazi Nazrul Islam attended a school here.

According to the 2011 Census of Bangladesh, Trishal Upazila had 93,886 households and a population of 419,308.

Trishal has a literacy rate (age 7 and over) of 40.02%, compared to the national average of 51.8%, and a sex ratio of 1010 females per 1000 males.

The union parishads are subdivided into 91 mauzas and 158 villages.

[8] Trishal Municipality is subdivided into 9 wards and 12 mahallas.