Irelyn is a distinctive girls' name in United States, ranking #6409 in 2003 with 18 recorded births. The name reached its all-time peak in 2008 with 176 births ranking #1370. Since 1996, the popularity has increased by 157.1%. In 2003, approximately 1 in every 101,503 girls born was named Irelyn. FALLING Recent data shows the name is currently falling.