The Northwestern Chinantec of Mexico, numbering approximately 21,000 people, are No Longer Unreached. They are described as a Chinantecan people of northern Oaxaca's Papaloapan River basin near Tuxtepec, Mexico, whose language traces to settlement of the Chinantla region over 3,500 years ago, distinct from the neighboring Zapotec and Mazatec They are an Indigenous people, with Chinantec as their ethnic/kinship group and are in the Zapotec people cluster of the Latin American and Caribbean Peoples. They mostly adhere to Folk Catholicism and Tlacoatzintepec Chinantec is their primary language.