Josilyn is a distinctive girls' name in United States, ranking #15987 in 2025 with 5 recorded births. This places Josilyn in the bottom 8% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has decreased by 80.8%. In 2025, approximately 1 in every 321,453 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.