Which age group do teenagers typically fall under?

Teenagers are generally classified as individuals who are within the age range of 13 to 19 years old. This definition stems from the term "teenager," which is derived from the numerals that are common in these ages (e.g., thirteen, fourteen, fifteen, etc.). This is a universally accepted age demarcation used in educational, health, and social contexts to describe individuals who are transitioning from childhood into adolescence and ultimately into adulthood.

The other age groups listed do not align with the widely recognized definition of a teenager. For instance, the age range of 10-12 years old represents pre-teens or "tweens," while 20-22 years old falls into early adulthood, and 6-12 years old corresponds to childhood. Hence, the range of 13-19 years old is the correct identification for teenagers.