Irelyn is a distinctive girls' name in United States, ranking #9056 in 1999 with 10 recorded births. The name reached its all-time peak in 2008 with 176 births ranking #1370. Since 1996, the popularity has increased by 42.9%. In 1999, approximately 1 in every 177,378 girls born was named Irelyn. FALLING Recent data shows the name is currently falling.