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Last name Dalen (Dale , Dalen , 达伦 ) , in the entire world, is a common family name. The surname Dalen is characteristic of Norway, where it is a common surname, Netherlands, where it is quite a common surname, and Isle of Man (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and India. More prevalently, Dalen is the forename as well as the last name.