Addelyn is a distinctive girls' name in United States, ranking #1175 in 2015 with 214 recorded births. This places Addelyn in the top 6% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 214 births ranking #1175. In 2015, approximately 1 in every 8,340 girls born was named Addelyn. STABLE Recent data shows the name is currently stable.