This study identified predictors of transience among homeless emerging adults in three cities. A total of 601 homeless emerging adults from Los Angeles, Austin, and Denver were recruited using purposive sampling. Ordinary least squares regression results revealed that significant predictors of greater transience include White ethnicity, high school degree or equivalent, homeless residence in the 6 months prior to the study, longer period of homelessness, history of arrest and juvenile detention, earning income through informal sources, history of physical abuse, alcohol/drug addiction, and resilience characteristics. Quantitative findings were expanded upon with data from in-depth interviews with 145 of these homeless emerging adults regarding their reasons and motivations for transience. Identifying predictors of transience will facilitate customizing interventions that, when needed, aim to stabilize homeless emerging adults, prevent their mobility, and/or offer mobile services to them on the road.