Joslynn is a distinctive girls' name in United States, ranking #2384 in 1999 with 62 recorded births. The name reached its all-time peak in 2011 with 209 births ranking #1171. Since 1996, the popularity has increased by 40.9%. In 1999, approximately 1 in every 28,609 girls born was named Joslynn. FALLING Recent data shows the name is currently falling.