Aileen is a distinctive girls' name in United States, ranking #510 in 2004 with 567 recorded births. The name reached its all-time peak in 2009 with 685 births ranking #454. Since 1996, the popularity has increased by 87.1%. In 2004, approximately 1 in every 3,238 girls born was named Aileen. STABLE Recent data shows the name is currently stable.