Can we name a number of how many Greeks live in the US?

It is hard to speak in numbers, because we do not have enough official data about them. According to some researchers, 250 thousand people have emigrated to the US during the first half of the 20^th century and according to other they were 250 thousand. Greece did not keep record of how many people had left. We received this information from the US archives, which are very valuable but even they have some gaps. What gaps? When the emigrant arrived in the US, his nationality was recorded based on his place of birth. The immigration authorities asked him where he is from and he answered – Peloponnese, in Greece. Some others though, have been from regions, which were part of the Ottoman Empire and are recorded as its citizens. The second problem of answering this question is what exactly does it mean to be an emigrant in the US – does it include the second generation Greeks, does it include the third…