Dyllan is a distinctive boys' name in United States, ranking #2615 in 2015 with 47 recorded births. The name reached its all-time peak in 1999 with 181 births ranking #835. Since 1996, the popularity has decreased by 63.3%. In 2015, approximately 1 in every 40,771 boys born was named Dyllan. FALLING Recent data shows the name is currently falling.