Following the establishment of Israel, about one-third of Iranian Jews, most of them poor, immigrated to Israel, and immigration from Iran continued throughout the following decades. An estimated 70,000 Iranian Jews immigrated to Israel between 1948 and 1978. Following the Islamic Revolution in 1979, most of the Iranian Jewish community left, with some 20,000 Iranian Jews immigrating to Israel. Many Iranian Jews also settled in the United States (especially in New York City and Los Angeles).