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Family name Sonora (Sonora , Soñora , Сонора ) , in the entire world, is quite a rare last name. The surname Sonora is characteristic of Latin America and the Caribbean, particularly Uruguay, where it is quite a rare surname, Mexico, and Argentina, where it is a rare surname. In absolute terms, it is the most numerous in Mexico, the United States, and Argentina. Also, Sonora is the forename as well as the last name.