Joslin is a distinctive girls' name in United States, ranking #3944 in 1997 with 28 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 33.3%. In 1997, approximately 1 in every 62,166 girls born was named Joslin. FALLING Recent data shows the name is currently falling.