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Surname Sipila (Sipila ) , all over the world, is quite a rare last name. The last name Sipila is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Lithuania, where it is a rare surname. Measured by absolute frequency, it is commonest in Finland, the United States, and Canada. Much less frequently, Sipila is the forename as well as the last name.