Very little has been published reporting on long-term outcomes experienced by young adults (aged 19 to 34 years old) who participated in 4-H youth development programs. We adopted Gambone et al.'s (2002) framework advancing three long-term outcomes for early adulthood: economic stability, health and well-being, and community involvement. With cross-sectional survey methods, we compared long-term impacts between 693 California 4-H young adult alumni and 373 young adults in a U.S. general population sample who had not participated in 4-H. The results demonstrated that 4-H alumni report more positive long-term outcomes than the U.S. general population sample. The study contributes to the dearth of research around long-term outcomes, may be useful for marketing and funding, and will help better understanding the public value of Extension.