Dalen is a distinctive boys' name in United States, ranking #1528 in 1998 with 71 recorded births. The name reached its all-time peak in 2001 with 99 births ranking #1316. Since 1996, the popularity has increased by 69.0%. In 1998, approximately 1 in every 26,920 boys born was named Dalen. FALLING Recent data shows the name is currently falling.