Trey is a moderately popular boys' name in United States, ranking #323 in 2010 with 970 recorded births. The name reached its all-time peak in 1999 with 1,798 births ranking #189. Since 1996, the popularity has decreased by 22.2%. In 2010, approximately 1 in every 1,978 boys born was named Trey. FALLING Recent data shows the name is currently falling.