In ancient times, it was Ratnapith, a part of Barind, a division of the Kamarupa kingdom. After the fall of the Kamarupa dynasties Sandhya, a later Kamarupa king, moved his capital from Kamarupanagara to Kamatapur in the middle of the 13th century, and established the Kamata kingdom. This situation prevailed till the time of Naranarayana, when it became a part of Koch Hajo. It was defined as an administrative unitfor the first time in the 17th century when it was called Sarkar Dhekuri under the Bengal Subah of the Mughals. After the transfer of the Bengal Diwani to the East India Company, the Goalpara region, minus the AssamDooars, then under Bhutan, came to be called Rangamatty, and after 1816, "Northeast Rangpur". When the British constituted this as a district in 1833 it came to be known after its headquarters which was in Goalpara town. A portion of the Assam Dooars areas were added to this district after the Bhutan war of 1865.
Peoples
A majority of the people belong to the Rajbongshi speaking Koch-Rajbongshi community, who are converts from Mech, Rabha, Keot/Kaibarta and Kachari communities in earlier times. Goalpariya dialect spoken here is a part of Rajbongshi which is a constituent of the Assamese language. Assamese Brahmins and Kayastha communities are small, and even the Kalitas, who have a dominating presence in the adjoining Kamrup region, are not as significant. The Bodos form a strong presence in the region. Traditionally, they are called Kacharis in the south and in the rest of Assam, but called Mech in the north bank of the Brahmaputra river and the whole of North Bengal. Their strongest presence is in the present Kokrajhar district in the north bank. The Rabhas, who along with the Bodos, are a semi-Hinduized group concentrated in the south bank. The Garos and the Hajongs too are not insignificant in the south. The indigenous Keot people are present near the wetlands and riverine areas both in the North and South Bank. The Muslim population, which is not insignificant, a distinction is made between the localindigenous communities that are descendants of ethnic groups convert, and non-local immigrant who have immigrated in recent times from downstream East Bengal.