Historically, Hungary was home to a significant Jewish community with a pre-World War II population of more than 800,000, but it is estimated that just over 564,000 Hungarian Jews were killed between 1941 and 1945 during the Holocaust in Hungary. Between 15 May and 9 July 1944 alone, over 434,000 Jews were deported on 147 trains, most of them to Auschwitz, where about 80 percent were gassed on arrival. Some Jews were able to escape, but most were either deported to concentration camps, where they were killed or murdered in Hungary by Arrow Cross members. From over 800,000 Jews living within Hungary's borders in 1941–1944, about 255,500 are thought to have survived. There are about 120,000 Jews in Hungary today.