What is the average height of a 12-year-old boy?

According to the Centers for Disease Control and Prevention, the average height of a 12-year-old boy in the United States is 149 centimeters, which converts to nearly 4 feet and 11 inches. This data has been sourced from the 50th-percentile column in the CDC stature-for-age chart at the 144-month mark.

Around 90 percent of 12-year-old boys in the United States fall into a height range between 4 feet 6 inches and 5 feet 4 inches tall. This information is up-to-date, but it is possible that the average height of humans as a species might change in the years to come.