Tehrangeles is a portmanteau deriving from the combination of Tehran, the capital of Iran, and Los Angeles. It is used when referring to the large number (estimates range from 700,000 to 800,000) of former Iranian nationals and their descendants residing in the Los Angeles metropolitan area after the 1979 Revolution left many families displaced; it is the largest such population outside of Iran. In common usage, it usually refers to the proportionally larger Persian-American subset of Iranian immigrants, many of whom are second generation citizens.