Joslin is a distinctive girls' name in United States, ranking #3104 in 2005 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 2005, approximately 1 in every 36,229 girls born was named Joslin. FALLING Recent data shows the name is currently falling.