Joslyne is a distinctive girls' name in United States, ranking #15000 in 2004 with 6 recorded births. This places Joslyne in the bottom 20% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 9 births ranking #11917. In 2004, approximately 1 in every 306,020 girls born was named Joslyne. RISING Recent data shows the name is currently rising.