Cailynn is a distinctive girls' name in United States, ranking #5939 in 2002 with 19 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 26.7%. In 2002, approximately 1 in every 94,569 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.