Keilyn is a distinctive girls' name in United States, ranking #3299 in 2023 with 49 recorded births. The name reached its all-time peak in 2009 with 63 births ranking #2813. Since 1996, the popularity has increased by 444.4%. In 2023, approximately 1 in every 32,707 girls born was named Keilyn. FALLING Recent data shows the name is currently falling.