The first settlers of Unitedville settled on the banks of the Little Barton Creek because of a cart road running through the area and due to the proximity of the Belize River.^[1]

In 1960 the Belize Estate and Produce Company wanted to evict all villages illegally situated on their lands, often for over a hundred years. Unitedville was one of these villages.

George Cadle Price of the People's United Party told them, "Do not move, we will win the elections in 1961 and we will get these lands for you all.". In March of 1961 his party won. The first thing they did was to acquire all the lands legally and paid the BEC with the hundreds of thousands they owed in land taxes.^[2]

Small Barton Creek was renamed Unitedville during the process of attaining independence from the United Kingdom.