Puberty & Development Information
11 Years Old
For girls, puberty usually starts
around age 11.
But it can start as early as
age 6 or 7.
12 Years Old
For boys, puberty begins
around age 12.
It can start as early
as age 9.
Puberty is a Process
It occurs for several years.
14 Years Old
Most girls finish puberty by age 14.
16 Years Old
Most boys finish puberty at age 15 or 16.
Precocious Puberty or Early Puberty
A study published in Pediatrics in 2010 found that among a population of 1,200 American girls,
about 23 percent of African-Americans,15 percent of Latinas and 10 percent of Caucasian girls had begun
puberty (marked by breast development) at age 7.
More Resources about precocious puberty: