Katlynn is a distinctive girls' name in United States, ranking #1862 in 2007 with 113 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has decreased by 47.7%. In 2007, approximately 1 in every 17,013 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.