Joslin is a distinctive girls' name in United States, ranking #7941 in 2018 with 14 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has decreased by 33.3%. In 2018, approximately 1 in every 121,459 girls born was named Joslin. FALLING Recent data shows the name is currently falling.