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Jews lived in Hebron, Nablus, Gaza. Jerusalem's Old City, Kfar Shiloach, Atarot, Neveh Yaakov, Bet HaAravah, Kfar Etzion, Ein Tzurim, Revadim, Masu'ot Yitzhak, and other locations from where they were expelled after undergoing a period of rioters and pogroms and terror for the 30 years of the British Mandate. Some families were residing there for centuries.
I do know that upwards of 17,000 Jews were considered refugees after 1948 for a few years and aided by UNRWA. How many were in those areas and had left earlier, after the 1920, 1921, 1929 and 1936-1939 riots, is a daunting accounting task.
In any case, between 1948 and 1967, the number of Jews living in Judea, Samaria and Gaza was ... 0. Zero.
Oh. and by the way:
Statistics published in the Palestine Royal Commission Report (p. 279) indicate a remarkable phenomenon: Palestine, traditionally a country of Arab emigration, became after World War I a country of Arab immigration. In addition to recorded figures for 1920-36, the Report devotes a special section to illegal Arab immigration. While there are no precise totals on the extent of Arab immigration between the two World Wars, estimates vary between 60,000 and 100,000. The principal cause of the change of direction was Jewish development, which created new and attractive work opportunities and, in general, a standard of living previously unknown in the Middle East. Another major factor in the rapid growth of the Arab population was, of course, the rate of natural increase, among the highest in the world. This was accentuated by the steady reduction of the previously high infant mortality rate as a result of the improved health and sanitary conditions introduced by the Jews. Altogether, the non-Jewish element in Palestine's population (not including Bedouin) expanded between 1922 and 1929 alone by more than 75 per cent.