Chilapa de Álvarez, informally known as Chilapa, is a municipality in the Mexican state of Guerrero, approximately 54 kilometers east of state capital Chilpancingo. It is a very old town, its first official charter was issued by the Aztec government in the 15th century, after the area's conquest by Moctezuma I in 1458. The Spanish officially designated the town as Chilapa de Santa Maria de Asuncion in 1522, in the late 19th century it was renamed Chilapa de Álvarez in honor of Mexican president Juan Álvarez.