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How long is a 17 year olds errect penis?

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Wiki User
July 14, 2009 2:38AM

According to a not-especially-scientific online survey at JackinWorld, the length of the average 17 year old was 6.27 inches.

From http://www.jackinworld.com/library/surveys/pub.html

Average erect penis length, by age:

11 3.29" 12 4.10" 13 5.34" 14 5.74" 15 6.04" 16 6.18" 17 6.27" 18 6.29" 19 6.25"