Josilyn is a distinctive girls' name in United States, ranking #5059 in 2000 with 23 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has decreased by 11.5%. In 2000, approximately 1 in every 78,955 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.