Josilyn is a distinctive girls' name in United States, ranking #3384 in 2003 with 43 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has increased by 65.4%. In 2003, approximately 1 in every 42,490 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.