Caitlyn is a distinctive girls' name in United States, ranking #1092 in 2017 with 232 recorded births. The name reached its all-time peak in 1998 with 2,937 births ranking #115. Since 1996, the popularity has decreased by 90.1%. In 2017, approximately 1 in every 7,439 girls born was named Caitlyn. FALLING Recent data shows the name is currently falling.