Cailynn is a distinctive girls' name in United States, ranking #4905 in 2020 with 26 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 73.3%. In 2020, approximately 1 in every 62,135 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.