Caitlyn is a distinctive girls' name in United States, ranking #1170 in 2018 with 206 recorded births. The name reached its all-time peak in 1998 with 2,937 births ranking #115. Since 1996, the popularity has decreased by 91.2%. In 2018, approximately 1 in every 8,254 girls born was named Caitlyn. FALLING Recent data shows the name is currently falling.