Aileen is a distinctive girls' name in England & Wales, ranking #1697 in 1998 with 10 recorded births. The name reached its all-time peak in 1996 with 12 births ranking #1434. Since 1996, the popularity has decreased by 16.7%. In 1998, approximately 1 in every 28,917 girls born was named Aileen. FALLING Recent data shows the name is currently falling.