Irelyn is a distinctive girls' name in United States, ranking #6491 in 1998 with 15 recorded births. The name reached its all-time peak in 2008 with 176 births ranking #1370. Since 1996, the popularity has increased by 114.3%. In 1998, approximately 1 in every 117,793 girls born was named Irelyn. FALLING Recent data shows the name is currently falling.