Dillan is a distinctive boys' name in United States, ranking #2357 in 2022 with 60 recorded births. This places Dillan in the top 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 312 births ranking #597. Since 1996, the popularity has decreased by 74.6%. In 2022, approximately 1 in every 29,073 boys born was named Dillan. FALLING Recent data shows the name is currently falling.