Cailynn is a distinctive girls' name in United States, ranking #6588 in 2025 with 17 recorded births. This places Cailynn in the top 38% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 13.3%. In 2025, approximately 1 in every 94,545 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.