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Cognomen Koole (柯尔 , Коле , Koole ) , around the globe, is quite a rare family name. The surname Koole is habitual in Aruba, where it is quite a common surname, Netherlands, and Belgium, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Netherlands, the United States, and Tanzania. Very seldom, Koole is the forename as well as the last name.