Joslin is a distinctive girls' name in United States, ranking #3283 in 2006 with 50 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 138.1%. In 2006, approximately 1 in every 38,021 girls born was named Joslin. FALLING Recent data shows the name is currently falling.