Irelyn is a distinctive girls' name in United States, ranking #1689 in 2009 with 132 recorded births. The name reached its all-time peak in 2008 with 176 births ranking #1370. Since 1996, the popularity has increased by 1,785.7%. In 2009, approximately 1 in every 13,916 girls born was named Irelyn. FALLING Recent data shows the name is currently falling.