Trey is a distinctive boys' name in England & Wales, ranking #577 in 2002 with 35 recorded births. The name reached its all-time peak in 2010 with 64 births ranking #536. Since 1996, the popularity has increased by 133.3%. In 2002, approximately 1 in every 8,237 boys born was named Trey. FALLING Recent data shows the name is currently falling.