Cailynn is a distinctive girls' name in United States, ranking #5239 in 2004 with 24 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 60.0%. In 2004, approximately 1 in every 76,505 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.