Joslin is a distinctive girls' name in United States, ranking #4869 in 2004 with 27 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 28.6%. In 2004, approximately 1 in every 68,004 girls born was named Joslin. FALLING Recent data shows the name is currently falling.