Dyllan is a distinctive boys' name in United States, ranking #1431 in 2006 with 109 recorded births. The name reached its all-time peak in 1999 with 181 births ranking #835. Since 1996, the popularity has decreased by 14.8%. In 2006, approximately 1 in every 18,854 boys born was named Dyllan. FALLING Recent data shows the name is currently falling.