Arlen is a distinctive girls' name in United States, ranking #5386 in 1998 with 19 recorded births. The name reached its all-time peak in 2007 with 31 births ranking #4696. Since 1996, the popularity has increased by 26.7%. In 1998, approximately 1 in every 92,994 girls born was named Arlen. STABLE Recent data shows the name is currently stable.