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Family name Koullas (Koullas ) , worldwide, is a rare surname. The last name Koullas is habitual in Cyprus, where it is quite a common surname, Greece, where it is a very rare surname, and Australia. In absolute terms, it most frequently occurs in Cyprus, the United Kingdom, and the United States.
VARIANT | COUNTRY |
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Koullas | Australia, Greece, United Kingdom, United States, Cyprus |