The Diocese of Bongaigaon is carved out of the Archdiocese of Guwahati consisting of Bongaigaon, Baksa,Barpeta,Dhubri,Chirang,Kokrajhar and Nalbari Districts of lower Assam that covers the surface area of 13,630 sq, km. with an over all population of 5.2 million of which 56,855(1.2%) are catholics. There are 25parishes, 20 Diocesan Priests, 34Religious Priests, 08 Brothers and 131 Women religious. Catholic population is mainly tribals with the Bodos forming the single largest group. Santhals, Adivasis, Garos and Rabhas are the other major groups. General population comprises of Koch and Koch Rajbanshies, the Assamese and Bengalis. Dhubri and Barpeta districts have Muslim majority.