Kailynn is a distinctive girls' name in United States, ranking #899 in 2011 with 290 recorded births. The name reached its all-time peak in 2011 with 290 births ranking #899. Since 1996, the popularity has increased by 408.8%. In 2011, approximately 1 in every 6,065 girls born was named Kailynn. FALLING Recent data shows the name is currently falling.