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All around the world, Harlen (Harlen , Харлен , הרלן ) is quite a rare unisex first name. The first name Harlen is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare unisex name, the Dominican Republic, where it is a rare masculine name, and Costa Rica, where it is a rare unisex name. Not in comparison with a country's population, it is commonest in the United States, Indonesia, and Philippines. Likewise, Harlen is the last name as well as the forename.