Ileen is a distinctive girls' name in United States, ranking #8758 in 2013 with 13 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 116.7%. In 2013, approximately 1 in every 134,955 girls born was named Ileen. STABLE Recent data shows the name is currently stable.