Dallen is a distinctive boys' name in United States, ranking #2826 in 2007 with 42 recorded births. The name reached its all-time peak in 2008 with 53 births ranking #2410. Since 1996, the popularity has increased by 23.5%. In 2007, approximately 1 in every 49,410 boys born was named Dallen. FALLING Recent data shows the name is currently falling.