Katlynn is a distinctive girls' name in United States, ranking #15012 in 2017 with 6 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has decreased by 97.2%. In 2017, approximately 1 in every 287,646 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.