Dallan is a distinctive boys' name in United States, ranking #5248 in 2007 with 17 recorded births. The name reached its all-time peak in 2008 with 34 births ranking #3296. Since 1996, the popularity has decreased by 22.7%. In 2007, approximately 1 in every 122,073 boys born was named Dallan. FALLING Recent data shows the name is currently falling.