original_query: How did the number of Jews in Poland change during the interwar period?
query: How did the number of Jews in Poland change during the interwar period?
answer: The Jewish population in Poland grew significantly during the interwar period.  In 1921, there were 2,845,364 Jews. By late 1938, this number had increased by over 16 percent to approximately 3,310,000, primarily due to migration from Ukraine and Soviet Russia.