Cailynn is a distinctive girls' name in United States, ranking #2806 in 2008 with 64 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 326.7%. In 2008, approximately 1 in every 29,542 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.