Dalen is a distinctive boys' name in United States, ranking #1392 in 2003 with 96 recorded births. The name reached its all-time peak in 2001 with 99 births ranking #1316. Since 1996, the popularity has increased by 128.6%. In 2003, approximately 1 in every 20,576 boys born was named Dalen. FALLING Recent data shows the name is currently falling.