Dillen is a distinctive boys' name in United States, ranking #2802 in 1998 with 29 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 12.1%. In 1998, approximately 1 in every 65,908 boys born was named Dillen. STABLE Recent data shows the name is currently stable.