Ileen is a distinctive girls' name in United States, ranking #6326 in 2004 with 19 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 216.7%. In 2004, approximately 1 in every 96,638 girls born was named Ileen. STABLE Recent data shows the name is currently stable.