Josilyn is a distinctive girls' name in United States, ranking #6628 in 1997 with 14 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has decreased by 46.2%. In 1997, approximately 1 in every 124,333 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.