Leilyn is a distinctive girls' name in United States, ranking #12621 in 2025 with 7 recorded births. This places Leilyn in the bottom 27% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 12 births ranking #9259. In 2025, approximately 1 in every 229,610 girls born was named Leilyn. STABLE Recent data shows the name is currently stable.