[2][3][4][5] The beginning of the settlement of São Raimundo das Mangabeiras dates from 1890, but until 1895 only lived Faustino Trindade and Sabino Bezerra, who were, as it is known, their first inhabitants.

Then, coming from Jurumenha - PI, Cipriano Taveira arrived with the help of the local population and neighboring villages in the construction of a church dedicated to Saint Raimundo Nonato, still patron of the city.

In 1917, Colonel Manoel José de Santana of New York and Major Rozendo Pires Ferreira of Loreto founded the Santana & Pires firm in São Raimundo das Mangabeiras, which is dedicated to the purchase of agricultural products and the sale of manufactured goods, Becoming very well known in the south of Maranhão and north of Goiás.

In 1925 he was elevated to the rank of town and, as a result of efforts made by State Representative José Franklin da Serra Costa, gained political autonomy by virtue of Law No.

His first (named) mayor was Colonel Raimundo Nonato dos Santos, being then elected Manoel Olívio de Carvalho.