Rosaly is a distinctive girls' name in United States, ranking #19922 in 2007 with 5 recorded births. The name reached its all-time peak in 2019 with 25 births ranking #5284. Since 1996, the popularity has decreased by 37.5%. In 2007, approximately 1 in every 384,490 girls born was named Rosaly. RISING Recent data shows the name is currently rising.