Trey is a moderately popular boys' name in United States, ranking #405 in 2013 with 732 recorded births. The name reached its all-time peak in 1999 with 1,798 births ranking #189. Since 1996, the popularity has decreased by 41.3%. In 2013, approximately 1 in every 2,584 boys born was named Trey. FALLING Recent data shows the name is currently falling.