Irelyn is a distinctive girls' name in United States, ranking #3635 in 2006 with 43 recorded births. The name reached its all-time peak in 2008 with 176 births ranking #1370. Since 1996, the popularity has increased by 514.3%. In 2006, approximately 1 in every 44,211 girls born was named Irelyn. FALLING Recent data shows the name is currently falling.