Dillen is a distinctive boys' name in United States, ranking #9937 in 2018 with 7 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 78.8%. In 2018, approximately 1 in every 259,353 boys born was named Dillen. STABLE Recent data shows the name is currently stable.