Josilyn is a distinctive girls' name in United States, ranking #3529 in 2004 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 2004, approximately 1 in every 43,717 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.