Dillen is a distinctive boys' name in United States, ranking #5305 in 2012 with 17 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 48.5%. In 2012, approximately 1 in every 111,566 boys born was named Dillen. STABLE Recent data shows the name is currently stable.