Cailynn is a distinctive girls' name in United States, ranking #3902 in 1999 with 30 recorded births. The name reached its all-time peak in 2009 with 68 births ranking #2679. Since 1996, the popularity has increased by 100.0%. In 1999, approximately 1 in every 59,126 girls born was named Cailynn. FALLING Recent data shows the name is currently falling.