Kilyn is a distinctive girls' name in United States, ranking #14100 in 2011 with 7 recorded births. This places Kilyn in the bottom 28% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 11 births ranking #10343. In 2011, approximately 1 in every 251,258 girls born was named Kilyn. FALLING Recent data shows the name is currently falling.