Irelynn is a distinctive girls' name in United States, ranking #4755 in 2005 with 28 recorded births. This places Irelynn in the top 25% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 111 births ranking #1904. In 2005, approximately 1 in every 65,989 girls born was named Irelynn. FALLING Recent data shows the name is currently falling.