Ileen is a distinctive girls' name in United States, ranking #7727 in 1998 with 12 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 100.0%. In 1998, approximately 1 in every 147,241 girls born was named Ileen. STABLE Recent data shows the name is currently stable.