On 9 April 1884, it was created the "Puesto Cantonal de Guaraguanó" in the Monte Cristi province. "Puesto Cantonal" was similar to a municipality; in English, "County (Military) Post". On 23 March 1898, the name of "Guaraguanó" was changed to the present name, "Monción", in honor of "Benito Monción", one of the heroes of the Restoration War against Spain.