Kaidyn is a distinctive girls' name in United States, ranking #2683 in 2006 with 67 recorded births. This places Kaidyn in the top 13% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 109 births ranking #1924. In 2006, approximately 1 in every 28,374 girls born was named Kaidyn. FALLING Recent data shows the name is currently falling.