Arlen is a distinctive girls' name in United States, ranking #5586 in 2004 with 22 recorded births. The name reached its all-time peak in 2007 with 31 births ranking #4696. Since 1996, the popularity has increased by 46.7%. In 2004, approximately 1 in every 83,460 girls born was named Arlen. STABLE Recent data shows the name is currently stable.