Kailynn is a distinctive girls' name in United States, ranking #2343 in 2025 with 78 recorded births. This places Kailynn in the top 14% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2011 with 290 births ranking #899. Since 1996, the popularity has increased by 36.8%. In 2025, approximately 1 in every 20,606 girls born was named Kailynn. FALLING Recent data shows the name is currently falling.