Kailynn is a distinctive girls' name in United States, ranking #2137 in 1998 with 68 recorded births. The name reached its all-time peak in 2011 with 290 births ranking #899. Since 1996, the popularity has increased by 19.3%. In 1998, approximately 1 in every 25,984 girls born was named Kailynn. FALLING Recent data shows the name is currently falling.