Katlynn is a distinctive girls' name in United States, ranking #839 in 1997 with 246 recorded births. The name reached its all-time peak in 1999 with 268 births ranking #813. Since 1996, the popularity has increased by 13.9%. In 1997, approximately 1 in every 7,076 girls born was named Katlynn. FALLING Recent data shows the name is currently falling.