Declyn is a distinctive girls' name in United States, ranking #4586 in 2018 with 30 recorded births. This places Declyn in the top 25% 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 30 births ranking #4586. In 2018, approximately 1 in every 56,681 girls born was named Declyn. STABLE Recent data shows the name is currently stable.