Judy Yung is the fifth daughter of six children born to immigrant parents from China. She grew up in San Francisco Chinatown, where her father worked as a janitor and her mother as a seamstress to support the family. Yung was able to acquire a bilingual education by attending both public school and Chinese language school for ten years. She received her Ph.D. in Ethnic Studies from the University of California, Berkeley. She also holds an M.A. in Library Science from the University of California, Berkeley, and a B.A. in English Literature and Chinese from San Francisco State University. Prior to entering academia, Yung worked as librarian for the Chinatown branch of the San Francisco Public Library and the Asian branch of the Oakland Public Library, pioneering the development of Asian language materials and Asian American interest collections in the public library to better serve the Asian American community. She also spent four years working as associate editor of the East West newspaper. In 1975, inspired by the discovery of Chinese poetry on the walls of the Angel Island detention barracks, Yung embarked on a research project with Him Mark Lai and Genny Lim to translate the poems and interview former Chinese detainees about their immigration experiences. They self-published Island: Poetry and History of Chinese Immigrants on Angel Island, 1910-1940 in 1980, and a second expanded edition of the book was published by the University of Washington Press in 2014. From 1981 to 1983, with a federal grant from the Women’s Educational Equity Program, Yung directed the Chinese Women of America Research Project, resulting in the first traveling exhibit on the history of Chinese American women and the book, Chinese Women of America: A Pictorial History. She then returned to graduate school to hone her research skills as a historian. Upon receiving her Ph.D. in Ethnic Studies, Yung was hired to establish an Asian American Studies program at the University of California, Santa Cruz, where she taught courses in Asian American studies, women's history, oral history, and mixed race until she retired in 2004. She has since devoted her time to writing more books about Chinese American history and serving as a historical consultant with a number of community organizations and film projects. In 2002, while working on Chinese American Voices, Judy Yung met Eddie Fung, a POW during World War II. They got married a year later and made Santa Cruz their home. After her husband died in 2018, Yung moved back to her hometown San Francisco, where she currently lives with her Scottish Fold, Sparkie.