whats average ppenis size
Report Abuse. For length the average is 5.88 inches and the median is 5.65 inches. For girth the average is 4.97 inches and the median is 4.67 inches. The average is larger because very long and very thick ones bias things a bit. Source(s): http://www.mraverage.com/stats.htm. Jordan Â· 7 years ago.