Cailynn is a distinctive girls' name in United States, ranking #3493 in 2007 with 47 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 213.3%. In 2007, approximately 1 in every 40,903 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.