This paper reviews changes in patterns of Koreans’ immigration to the United States between 1965 and 2009 based on annual statistical reports by the immigration office. This review captures changes in the annual number of Korean immigrants, their immigration mechanisms and occupational characteristics, and the proportion of status adjusters. The annual number of Korean immigrants gradually increased for the first ten years, reached the peak between 1976 and 1990, gradually decreased in the 1990s, and slightly increased in the 2000s again. At the end of the 1960s and early 1970s, professionals, especially medical professionals, composed a significant proportion of Korean immigrants. The proportion of Korean immigrants in specialty occupations declined in the late 1970s and early 1980, with a concomitant increase in the proportion of family-based immigrants. But the trend reversed beginning in the early 1990s, with the gradual increase in the proportion of Korean specialty immigrants and the radical decrease in the proportion of family-based immigrants. The predominant majority of Korean immigrants during recent years are status adjusters. The presence of an increasing number of non-immigrant temporary residents in the Korean community, along with great technological advances, has helped Korean residents maintain strong transnational ties to their homeland.