Aileen is a distinctive girls' name in United States, ranking #539 in 1997 with 441 recorded births. The name reached its all-time peak in 2009 with 685 births ranking #454. Since 1996, the popularity has increased by 45.5%. In 1997, approximately 1 in every 3,947 girls born was named Aileen. STABLE Recent data shows the name is currently stable.