During the reign of the Mughal emperor Bahadur Shah in 1705/1706 CE, the Faujdar (local governor) Bakhtiyar ibn Ilyas Khan built a mosque in Ujania which still stands today.
The survey work started from the southern boundary of Daudkandi Thana i.e. the northern end of present Kachua Upazila.
At one stage of the survey, the police officer and other people came to the southern part of the village on the north side adjacent to Kachua Bazar and found some palm trees.
A local villager by the name of Maulvi Ali Akmat asked how much of the survey work had been done and in reply, the officer said "Kuch Hua" meaning some things have happened.
[6] During the Bangladesh Liberation War of 1971, a brawl took place in Raghunathpur Bazar leading to the death of one Bengali freedom fighter and 14 civilians.
Kachua had a literacy rate (age 7 and over) of 53.77%, compared to the national average of 51.8%, and a sex ratio of 1114 females per 1000 males.