Rosealyn is a distinctive girls' name in United States, ranking #16461 in 2012 with 6 recorded births. This places Rosealyn in the bottom 16% 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 15 births ranking #7691. In 2012, approximately 1 in every 293,457 girls born was named Rosealyn. FALLING Recent data shows the name is currently falling.