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Significance
South Korean immigration to the United States has generally reflected plantation labour, Japanese colonial rule, war, political instability, overseas education, professional employment, business opportunities, family reunification, and international adoption.
Korean migration to the United States began in significant numbers during the early twentieth century. In 1903, the first major group arrived in Hawaii, where many worked on sugar plantations alongside labourers from other Asian and European countries. Additional arrivals included students, political activists, merchants, religious leaders, and women who migrated as picture brides. Immigration later expanded after World War II and the Korean War, bringing students, military spouses, adopted children, refugees, and professionals. South Korean communities developed particularly in California, New York, New Jersey, Virginia, Texas, Illinois, and Hawaii, where immigrants established churches, businesses, newspapers, schools, restaurants, professional associations, and cultural organisations.
Korean Migration Before South Korea
Before the Republic of Korea was established, migration was shaped by rural poverty, political unrest, Japanese colonial rule, missionary connections, and demand for plantation workers in Hawaii. Early immigrants frequently worked in sugar production before some moved to California and other mainland states for agriculture, mining, domestic service, education, and small-business opportunities. Korean independence activists in the United States organised associations, published newspapers, raised funds, and supported resistance to Japanese control. Immigration became increasingly restricted after Japan assumed authority over Korean foreign relations in 1905 and the United States introduced laws limiting Asian migration. Because Korea had not yet been divided, early migrants were generally identified simply as Koreans rather than as South or North Koreans.
