Josilyn is a distinctive girls' name in United States, ranking #2886 in 2005 with 57 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has increased by 119.2%. In 2005, approximately 1 in every 32,416 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.