Apparently around 110-120, but I'm 12 and live in the UK and am 84lbs...WTF? but perhaps that was American statistics, I'm not too sure.sorry for not being much of a help but I would say below 100lbs.
a
Around 110 lbs should be a normal body weight for a 12 year old.
The average weight for a 12 year old at 5ft 5 is between 80 and 100 pounds.
the avrige for a 12 year old is 8 st
well the average weight should be from 90-120.
115 pounds
105 or so
105
12 pounds
99 pounds
120
I believe the average weight for a 12 year old is around 100-140 lbs. The average height is 5 ft-5,10.I know a kid that's 12 an 5'6.The average height is 5'1-5'4