During the 20th century the U.S. foreign-born population became increasinglyconcentrated in just a few states. The post-1965 increases in immigration levels and shifts inorigins reinforced the trend toward geographic concentration with a specific tilt towardCalifornia, especially, but also Texas and Florida. By 1990, more than one-third of allimmigrants lived in California and more than 70 percent in the top six states. There was everyreason to expect this growing concentration to continue since more than one-third of all newimmigrants were headed for California and the state was receiving more foreign-born migrantsfrom other states than it lost to them. These patterns continued through the early 1990s.