Dalen is a distinctive boys' name in United States, ranking #1887 in 2004 with 65 recorded births. The name reached its all-time peak in 2001 with 99 births ranking #1316. Since 1996, the popularity has increased by 54.8%. In 2004, approximately 1 in every 30,535 boys born was named Dalen. FALLING Recent data shows the name is currently falling.