Dillen is a distinctive boys' name in United States, ranking #2557 in 2003 with 40 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has increased by 21.2%. In 2003, approximately 1 in every 49,382 boys born was named Dillen. STABLE Recent data shows the name is currently stable.