In 1830 the final separation of Sonora and Sinaloa decreed to form their independent states. The new state of Sinaloa was divided into eleven districts, being Mocorito one, comprising within its jurisdiction, the boundaries that mark on the north side of the coast, the town of Playa Colorada, and towards the mountains, the town of Corral Quemado, adjoining district Badiraguato; by the same mountain, south bordering on the district and the town of Culiacan Ocualtita; towards Jesús María almost reaching the coast, the town of Aguapepe and Awnings, opposite the island of Tachichilte. Mocorito was erected municipality by decree published on April 8, 1915. In 1916 Mocorito suffer a reduction in their geographical extension to become political in Municipality Directorate of Angostura. In 1962 suffers a further reduction to settle the town of Salvador Alvarado. Don Hector Rodelo Olea said that Mocorito is a variant of the Cahita word "Macori-to", composed of Macuri, short for "macorihui" a voice alteration "macoyahuy" objective applied to a fraction of the Mayo Indians or people who speak a dialect the Cahita language; Further, the position "to" denoting location, place; the place name means "place of nations who speak a dialect of Cahita tongue, or inhabited by Mayan Indians or macoritos". Other historians, like Eustaquio Buelnal, prefer the translation of Mocorito as "place of the dead". Finding Mayor Eng. Luis Verduzco Leal, shield Township Mocorito was developed in 1964 by Mr. Miguel Angel Velazquez Tracy, shaping oval, tronchado band and quartered, with bordura imitating stone in honor of Indian origin, in ignorance Metal and footprints oriented northwest and southeast in greater numbers and from southeast to northwest lesser number, meaning nahoa pilgrimage to give Sinaloa population, and Mocorito in particular.In the first quarter sable coat background is seen, meaning the darkness of prehistory. The second quarter, enamelled purple to signify the dawn of history Mocorito. Substance and orange, a building of defense, meaning the city of San Miguel de Culiacán; south another figure in blue formed by two strong arms that mean the Humaya river and Tamazula.