What is is a 19 year old a teenager?

Yes, a 19-year-old is considered a teenager as they fall within the age range of 13-19. This period of life is called adolescence which is marked by various physical, psychological, and socio-emotional changes. A 19-year-old may be in their final years of high school or transitioning to college or their first job, and experiencing a period of significant growth and exploration as they transition into adulthood.