Ileen is a distinctive girls' name in United States, ranking #4331 in 2000 with 28 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 366.7%. In 2000, approximately 1 in every 64,856 girls born was named Ileen. STABLE Recent data shows the name is currently stable.