Aileen is a distinctive girls' name in England & Wales, ranking #1996 in 2003 with 9 recorded births. The name reached its all-time peak in 1996 with 12 births ranking #1434. Since 1996, the popularity has decreased by 25.0%. In 2003, approximately 1 in every 30,963 girls born was named Aileen. FALLING Recent data shows the name is currently falling.