Kellyn is a distinctive girls' name in United States, ranking #2875 in 1999 with 47 recorded births. The name reached its all-time peak in 2008 with 67 births ranking #2731. Since 1996, the popularity has decreased by 16.1%. In 1999, approximately 1 in every 37,740 girls born was named Kellyn. FALLING Recent data shows the name is currently falling.