Ileen is a distinctive girls' name in United States, ranking #5586 in 2007 with 25 recorded births. The name reached its all-time peak in 2008 with 29 births ranking #5065. Since 1996, the popularity has increased by 316.7%. In 2007, approximately 1 in every 76,898 girls born was named Ileen. STABLE Recent data shows the name is currently stable.