Board Thread:Character Discussion/@comment-34563899-20180218220444/@comment-28162607-20180220160223

Well Neal had spent 200 years on Neverland, so he was evidently not 19.

But the wanted poster said that Neal was 22, so we know that biologically that was his age. Which makes sense given what else we know about him in the LWM, even if it is a bit young.