First-off, I have to say to reference what an average size penis is for any age. A second answer I will provide you is to know that life is of greater substance than measuring your erect-penis, which...
yes.
yes, my boyfriend age 13 is that size. you'll grow.
It's in the average range.
Well the other day I turned 13 and my penis is 5.5 inches so I think we are about average.