Josilyn is a distinctive girls' name in United States, ranking #3242 in 2011 with 51 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has increased by 96.2%. In 2011, approximately 1 in every 34,486 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.