Dillan is a distinctive boys' name in England & Wales, ranking #631 in 2011 with 53 recorded births. The name reached its all-time peak in 2011 with 53 births ranking #631. Since 1996, the popularity has increased by 82.8%. In 2011, approximately 1 in every 6,525 boys born was named Dillan. RISING Recent data shows the name is currently rising.