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Cognomen Koczaj (Koczaj ) , all over the world, is a rare last name. The surname Koczaj is characteristic of Poland, where it is a rare surname, Greece, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Poland, Greece, and the United States. Likewise, Koczaj is the forename as well as the last name.
VARIANT | COUNTRY |
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Koczaj | United Kingdom, United States, Poland, Greece, France |