Aileen is a distinctive girls' name in United States, ranking #678 in 2021 with 429 recorded births. The name reached its all-time peak in 2009 with 685 births ranking #454. Since 1996, the popularity has increased by 41.6%. In 2021, approximately 1 in every 3,822 girls born was named Aileen. STABLE Recent data shows the name is currently stable.