Josilyn is a distinctive girls' name in United States, ranking #3748 in 2012 with 42 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has increased by 61.5%. In 2012, approximately 1 in every 41,922 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.