Cailynn is a distinctive girls' name in United States, ranking #5596 in 2021 with 22 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 46.7%. In 2021, approximately 1 in every 74,532 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.