Joslin is a distinctive girls' name in United States, ranking #3189 in 2012 with 52 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 147.6%. In 2012, approximately 1 in every 33,860 girls born was named Joslin. FALLING Recent data shows the name is currently falling.