Keilyn is a distinctive girls' name in United States, ranking #3443 in 2022 with 46 recorded births. The name reached its all-time peak in 2009 with 63 births ranking #2813. Since 1996, the popularity has increased by 411.1%. In 2022, approximately 1 in every 35,625 girls born was named Keilyn. FALLING Recent data shows the name is currently falling.