Cailynn is a distinctive girls' name in United States, ranking #3016 in 2010 with 56 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 273.3%. In 2010, approximately 1 in every 31,738 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.