Trey is a distinctive boys' name in England & Wales, ranking #775 in 2008 with 37 recorded births. The name reached its all-time peak in 2010 with 64 births ranking #536. Since 1996, the popularity has increased by 146.7%. In 2008, approximately 1 in every 9,172 boys born was named Trey. FALLING Recent data shows the name is currently falling.