Trey is a distinctive boys' name in England & Wales, ranking #891 in 2005 with 25 recorded births. The name reached its all-time peak in 2010 with 64 births ranking #536. Since 1996, the popularity has increased by 66.7%. In 2005, approximately 1 in every 12,378 boys born was named Trey. FALLING Recent data shows the name is currently falling.