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Surname Palkó (Palko , Palkó ) , across the world, is quite a common cognomen. The cognomen Palkó is characteristic of Eastern Europe, particularly Slovakia, where it is quite a common surname, Hungary, and Romania, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Hungary, the United States, and Slovakia. Much less frequently, Palkó is the forename as well as the last name.