Certainly, several of the communities of African ancestry dispersed across different regions are obvious products of racial mixing - mainly indigenous and black. These include groups in the northern states of Yucatán and Quintana Roo, who are mainly descendants of Maroons and free blacks from the United States of America (Muhammad, 1995, p. 170). However, the largest and most clearly defined group of blacks is to be found among the forty small communities on the Costa Chica and Costa Grande of Oaxaca and Guerrero respectively, on the Pacific Coast. In the state of Guerrero these communities include: Cuajinicuilapa, El Pitarroso, San Nicolás, Montecillos, Punta Maldonado, Buenos Aires, Alto de Barranas, Cerro del Indio, Banco de Oro, El Tamarindo, El Tamaic, El Jícaro, El Vaivén, El Quizá, Cerro de las Tablas, Ometepec, El Capricho, Vista Hermosa, Huehuetán and Juchitán. Among the villages in Oaxaca are Collantes, Morelos, La Boquilla, El Chivo, Cerro de la Esperanza, Santo Domingo, Santiago Tapextla, San Juan Bautista Lo De Soto, Santa Maria Cortijo, La Estancia, La Culebra, Rancho Nuevo, El Callejón, Lagunillas, El Ciruelo, Rio Grande, Santa Rosa, Cerro Hermoso (Ramsay, 2016, p. 18).  
While the mixed heritage of people in many of these communities is undeniable, there are many persons in villages such as Santo Domingo, Collantes, El Ciruelo and Tapextla who can safely be regarded as 'fully' Afro-Mexican. Father Glyn Jemmott Nelson describes the African demographic as follows:  
Among the villages with a more than eighty per cent Afro-Mexican population are El Ciruelo, Estancia Grande, Rancho Nuevo, Santa María Cortijos and Santiago Llano Grande, El Maguey, San Juan Bautista de Soto, Corralero, Collantes and Lagunillas. Others, with a significant, though not majority black population are Pinotepa Nacional, Santa Rosa, Río Grande and Santa María Huazolotitlán.
(Interview with Paulette Ramsay, Port of Spain, Trinidad, 15 April 2014)