Dillen is a distinctive boys' name in United States, ranking #3850 in 2009 with 27 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 18.2%. In 2009, approximately 1 in every 73,456 boys born was named Dillen. STABLE Recent data shows the name is currently stable.