Dillen is a distinctive boys' name in United States, ranking #12642 in 2019 with 5 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 84.8%. In 2019, approximately 1 in every 358,672 boys born was named Dillen. STABLE Recent data shows the name is currently stable.