Joslin is a distinctive girls' name in United States, ranking #3219 in 2002 with 44 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 109.5%. In 2002, approximately 1 in every 40,837 girls born was named Joslin. FALLING Recent data shows the name is currently falling.