Arlen is a distinctive girls' name in United States, ranking #4541 in 2000 with 26 recorded births. The name reached its all-time peak in 2007 with 31 births ranking #4696. Since 1996, the popularity has increased by 73.3%. In 2000, approximately 1 in every 69,845 girls born was named Arlen. STABLE Recent data shows the name is currently stable.