besalel: According to studies and research conducted by Daniel J. Elazar, Political Scientist and demographer at Bar Ilan University and founder of the Jerusalem Center for Public Affairs, in 1931 Ashkenazim accounted for 92% of the Jewish population and today account for 80%, while Sephardim/Mizrachi today constitute approximately twenty percent of world Jewry.
There are 5.8 million Jews in all of Israel according to the Israel Central Bureau of Statistics (and that’s including their overcounting with non-halachic Jews.) Of those 3 million are Ashkenazim and 1.8 million are Sephardim/Mizrachim according to the Israel Central Bureau of Statistics. And a majority of Sephardim live in Israel. The overwhelmingly vast vast majority of Jews outside Israel are Ashkenazim. The only other countries with notable Sephardic populations are France with 300,000 Sephardim and the U.S. with 200,000. After that it is 50k in Argentina and 20k in Turkey. There is between 9-11.2 million worldwide Ashkenazim, with 5-6 million in the US alone.