On 29th September, 1989, the creation of Bongaigaon District was declared by the Government of Assam with its headquarter at Bongaigaon. The major portion of the areas of erstwhile Bijni and Sidli estates along with tracts of Eastern Duars was curved out of Goalpara and Kokrajhar District in October, 1989 in order to create a newest district of Assam, i.e. Bongaigaon. Although the logistic behind the creation of this new district was no doubt an administrative one but the political as well as economic exigencies were also responsible behind its creation.
The original Goalpara district was first created in 1822 A.D. by David Scott- an employee of East India Company, who was the first Commissioner of newly created North East Rangpur district Hd. Qr. at Rangpur town(now in Bangla Desh) and newly created Goalpara district was also tagged with North-East Rangpur district for administration. The erstwhile Bijni Kingdom's area which included the undivided Garo Hills district area also constituted the original Goalpara district area in 1822. In 1866 Garo Hills was separated from Goalpara district area and in the same year a new district named "Greater Koch Behar" was created and the residual portion of Goalpara district was withdrawn from Rangpur and tagged with Koch Behar. In 1874 a new province named Assam Valley Province was created by British Govt.(Successor of East India Company) and Goalpara district area was withdrawn from Koch Behar and tagged with Assam Province which continues till today unless petty political gambling disturbs. Now the original Goalpara district is partitioned to four districts namely (i) Goalpara (ii) Dhubri (iii) Kokrajhar and (iv) Bongaigaon.