Ileen is a distinctive girls' name in United States, ranking #7350 in 2003 with 15 recorded births. This places Ileen in the top 40% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 150.0%. In 2003, approximately 1 in every 121,803 girls born was named Ileen. STABLE Recent data shows the name is currently stable.