Cailynn is a distinctive girls' name in United States, ranking #2970 in 2015 with 58 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 286.7%. In 2015, approximately 1 in every 30,770 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.