Joslyn is a distinctive girls' name in United States, ranking #981 in 1996 with 194 recorded births. This places Joslyn in the top 6% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2010 with 461 births ranking #641. In 1996, approximately 1 in every 9,036 girls born was named Joslyn. FALLING Recent data shows the name is currently falling.