Dalen is a distinctive boys' name in United States, ranking #1708 in 1997 with 57 recorded births. This places Dalen in the top 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2001 with 99 births ranking #1316. Since 1996, the popularity has increased by 35.7%. In 1997, approximately 1 in every 33,072 boys born was named Dalen. FALLING Recent data shows the name is currently falling.