Ileen is a distinctive girls' name in United States, ranking #4752 in 2005 with 28 recorded births. This places Ileen in the top 25% 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 366.7%. In 2005, approximately 1 in every 65,989 girls born was named Ileen. STABLE Recent data shows the name is currently stable.