Dillen is a distinctive boys' name in United States, ranking #5489 in 2011 with 16 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 51.5%. In 2011, approximately 1 in every 118,687 boys born was named Dillen. STABLE Recent data shows the name is currently stable.