Trey is a distinctive boys' name in England & Wales, ranking #644 in 2006 with 43 recorded births. The name reached its all-time peak in 2010 with 64 births ranking #536. Since 1996, the popularity has increased by 186.7%. In 2006, approximately 1 in every 7,450 boys born was named Trey. FALLING Recent data shows the name is currently falling.