Katlynn is a distinctive girls' name in United States, ranking #10901 in 2019 with 9 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has decreased by 95.8%. In 2019, approximately 1 in every 186,397 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.