Dillen is a distinctive boys' name in United States, ranking #11024 in 2015 with 6 recorded births. The name reached its all-time peak in 2003 with 40 births ranking #2557. Since 1996, the popularity has decreased by 81.8%. In 2015, approximately 1 in every 319,376 boys born was named Dillen. STABLE Recent data shows the name is currently stable.