Katlynn is a distinctive girls' name in United States, ranking #8364 in 2018 with 13 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has decreased by 94.0%. In 2018, approximately 1 in every 130,802 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.