Dallyn is a distinctive girls' name in United States, ranking #13232 in 2016 with 7 recorded births. This places Dallyn in the bottom 30% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 7 births ranking #13507. In 2016, approximately 1 in every 253,070 girls born was named Dallyn. FALLING Recent data shows the name is currently falling.