Dex is a distinctive boys' name in United States, ranking #3809 in 2024 with 29 recorded births. The name reached its all-time peak in 2016 with 43 births ranking #2796. Since 1996, the popularity has increased by 262.5%. In 2024, approximately 1 in every 59,149 boys born was named Dex. FALLING Recent data shows the name is currently falling.