Caitlin is a distinctive boys' name in United States, ranking #8849 in 1999 with 6 recorded births. This places Caitlin in the bottom 24% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2004 with 12 births ranking #6195. Since 1996, the popularity has decreased by 25.0%. In 1999, approximately 1 in every 320,015 boys born was named Caitlin. RISING Recent data shows the name is currently rising.