Dillan is a moderately popular boys' name in England & Wales, ranking #473 in 2001 with 44 recorded births. The name reached its all-time peak in 2011 with 53 births ranking #631. Since 1996, the popularity has increased by 51.7%. In 2001, approximately 1 in every 6,541 boys born was named Dillan. RISING Recent data shows the name is currently rising.