Ileen is a distinctive girls' name in United States, ranking #10414 in 2015 with 10 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 66.7%. In 2015, approximately 1 in every 178,465 girls born was named Ileen. STABLE Recent data shows the name is currently stable.