Kellyn is a distinctive girls' name in United States, ranking #11426 in 2025 with 8 recorded births. The name reached its all-time peak in 2008 with 67 births ranking #2731. Since 1996, the popularity has decreased by 85.7%. In 2025, approximately 1 in every 200,908 girls born was named Kellyn. FALLING Recent data shows the name is currently falling.