Rhoslyn is a distinctive girls' name in United States, ranking #16017 in 2005 with 6 recorded births. This places Rhoslyn in the bottom 17% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 11 births ranking #9685. In 2005, approximately 1 in every 307,950 girls born was named Rhoslyn. RISING Recent data shows the name is currently rising.