Joslynn is a distinctive girls' name in United States, ranking #1532 in 2007 with 150 recorded births. The name reached its all-time peak in 2011 with 209 births ranking #1171. Since 1996, the popularity has increased by 240.9%. In 2007, approximately 1 in every 12,816 girls born was named Joslynn. FALLING Recent data shows the name is currently falling.