Kylyn is a distinctive girls' name in United States, ranking #8306 in 1998 with 11 recorded births. This places Kylyn in the bottom 50% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 20 births ranking #6301. In 1998, approximately 1 in every 160,626 girls born was named Kylyn. FALLING Recent data shows the name is currently falling.