In 1940 the families arrive in the area of Mr. Antônio Belarmino de Oliveira, Mr. Belo Belarmino de Oliveira, Mr. Manoel Belarmino de Oliveira, Mr. Francisco Fonseca, known as "Chico Pequeno", Mr. Sulino Alves, Mr. Antônio Cabrinha, Mr. Manoel "Bastiana" José Chagas Guimarães, "Tenente" and João Félix Rodrigues, known as João Barata. These families came from Maranhão in search of land to work. Arriving at the site then occupied the vacant land, settled on the banks of the river Traíras left and founded a village named Coco Escuro. These pioneers founded a school began to work in agriculture. In 1942, most residents switch to the right bank of the stream. The village is growing and in 1991 the Village Santa Terezinha is the status of a district. Law No. 685 of 1993 raises the district to a municipality. It was elevated to the status of municipality and district with the name of Santa Tereza do Tocantins in 1994, separated from the municipality of Nazaré. The official area of the municipality of Santa Tereza do Tocantins is currently 540km² and the 2010 census, listed with 2.523 inhabitants, with a population decrease in the order of 6.52% compared to the census of 2000.
