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Family name Chaku (Chaku , Chaco ) , globally, is quite a rare last name. The family name Chaku is habitual in Latin America and the Caribbean, particularly Peru, where it is quite a rare surname, Paraguay, and Bolivia, where it is a rare surname. Measured by absolute frequency, this name is the most popular in India, Peru, and the United States. Also, Chaku is the forename as well as the last name.