Addlyn is a distinctive girls' name in United States, ranking #12486 in 2018 with 7 recorded births. This places Addlyn in the bottom 31% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 9 births ranking #10879. In 2018, approximately 1 in every 242,918 girls born was named Addlyn. FALLING Recent data shows the name is currently falling.