Arlen is a distinctive girls' name in United States, ranking #8865 in 1999 with 10 recorded births. The name reached its all-time peak in 2007 with 31 births ranking #4696. Since 1996, the popularity has decreased by 33.3%. In 1999, approximately 1 in every 177,378 girls born was named Arlen. STABLE Recent data shows the name is currently stable.