Cailynn is a distinctive girls' name in United States, ranking #3661 in 2005 with 40 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 166.7%. In 2005, approximately 1 in every 46,192 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.