Illeana is a distinctive girls' name in United States, ranking #4148 in 2005 with 34 recorded births. The name reached its all-time peak in 2005 with 34 births ranking #4148. Since 1996, the popularity has increased by 277.8%. In 2005, approximately 1 in every 54,344 girls born was named Illeana. FALLING Recent data shows the name is currently falling.