Dallen is a distinctive boys' name in United States, ranking #2284 in 2003 with 47 recorded births. The name reached its all-time peak in 2008 with 53 births ranking #2410. Since 1996, the popularity has increased by 38.2%. In 2003, approximately 1 in every 42,027 boys born was named Dallen. FALLING Recent data shows the name is currently falling.