Cognomen Popko (Popko 
) , in the world, is quite a rare family name. The cognomen Popko is characteristic of Poland, where it is quite a rare surname, Estonia, and Israel. Measured by absolute frequency, it is commonest in Poland, Germany, and the United States. Also, Popko is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Popko | Poland, Israel, United States, Belarus, Germany |
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popko noordhoff (b. 1833) |
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| popko van groningen NL (b. 1822) |
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| oleksandr popko (b. 1894) |
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| jerzy popko PL (b. 1914) |
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| maciej popko Polish orientalist (1936-2014), PL (b. 1936) |
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| edward popko American photographer |
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| james t popko researcher (ORCID 0000-0001-7518-7373) |
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| jerzy popko Polish mathematician |
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| andrey popko Belarusian Righteous Among the Nations, BY |
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| brian popko researcher ORCID ID = 0000-0001-9948-2553 |
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| łukasz popko PL (b. 1978) |
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| lutz popko (b. 1978) |
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| luke popko American ice hockey player (1988-), US (b. 1988) |
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| hanna popko sportsperson, PL |
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