Dillan is a distinctive boys' name in England & Wales, ranking #577 in 2002 with 35 recorded births. The name reached its all-time peak in 2011 with 53 births ranking #631. Since 1996, the popularity has increased by 20.7%. In 2002, approximately 1 in every 8,237 boys born was named Dillan. RISING Recent data shows the name is currently rising.