Joslin is a distinctive girls' name in United States, ranking #3747 in 2014 with 41 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 95.2%. In 2014, approximately 1 in every 43,559 girls born was named Joslin. FALLING Recent data shows the name is currently falling.