Josilyn is a distinctive girls' name in United States, ranking #2982 in 2009 with 58 recorded births. The name reached its all-time peak in 2006 with 69 births ranking #2613. Since 1996, the popularity has increased by 123.1%. In 2009, approximately 1 in every 31,670 girls born was named Josilyn. FALLING Recent data shows the name is currently falling.