Dallan is a distinctive boys' name in United States, ranking #12452 in 2025 with 5 recorded births. This places Dallan in the bottom 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 34 births ranking #3296. Since 1996, the popularity has decreased by 77.3%. In 2025, approximately 1 in every 341,615 boys born was named Dallan. FALLING Recent data shows the name is currently falling.