This article presents an analysis of patterns of health insurance, both public and privately funded, among young people from early adolescence through their early 30s. The main objective was to describe the changes that take place in insurance coverage during this period of the lifespan. The analysis, using NHIS data, demonstrates patterns in private and public coverage, as well as full-year and part-year coverage, and documents differences in insurance patterns by socioeconomic status and among racial and ethnic groups during this period of transition.