Katlynn is a distinctive girls' name in United States, ranking #1475 in 2005 with 143 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has decreased by 33.8%. In 2005, approximately 1 in every 12,921 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.