Katlyn is a distinctive girls' name in United States, ranking #788 in 2006 with 348 recorded births. The name reached its all-time peak in 1997 with 1,232 births ranking #242. Since 1996, the popularity has decreased by 70.7%. In 2006, approximately 1 in every 5,463 girls born was named Katlyn. FALLING Recent data shows the name is currently falling.