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Cognomen Chilko (Chilko , Хилько , Шилко ) , globally, is quite a common family name. The family name Chilko is habitual in Belarus, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Kazakhstan. In absolute terms, this name is the most popular in Eastern Europe, particularly Russia, Belarus, and Ukraine. Much less frequently, Chilko is the forename as well as the last name.