Joslin is a distinctive girls' name in United States, ranking #3306 in 2007 with 51 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 142.9%. In 2007, approximately 1 in every 37,695 girls born was named Joslin. FALLING Recent data shows the name is currently falling.