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Surname Castellon (Castellon , Castellón ) , worldwide, is a common last name. The family name Castellon is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is a common surname, Honduras, where it is quite a common surname, and El Salvador (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Latin America and the Caribbean, particularly Nicaragua, Mexico, and Honduras. Much less frequently, Castellon is the forename as well as the last name.