Kathlynn is a distinctive girls' name in United States, ranking #11672 in 2011 with 9 recorded births. The name reached its all-time peak in 2003 with 15 births ranking #7392. Since 1996, the popularity has increased by 28.6%. In 2011, approximately 1 in every 195,423 girls born was named Kathlynn. FALLING Recent data shows the name is currently falling.