Caitlyn is a distinctive girls' name in United States, ranking #1049 in 2016 with 249 recorded births. The name reached its all-time peak in 1998 with 2,937 births ranking #115. Since 1996, the popularity has decreased by 89.3%. In 2016, approximately 1 in every 7,114 girls born was named Caitlyn. FALLING Recent data shows the name is currently falling.